Home / 12,145,234,302.70-18,217,851,454.05-7,243,442,968.30

Finding the Fourth Proportional to 12,145,234,302.70, 18,217,851,454.05 and 7,243,442,968.30

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Solution

The fourth proportional to 12,145,234,302.70, 18,217,851,454.05 and 7,243,442,968.30 is: 10,865,164,452.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145,234,302.70 : 18,217,851,454.05 = 7,243,442,968.30 : x
  2. Step 2: Convert to fraction form
    12,145,234,302.70/18,217,851,454.05 = 7,243,442,968.30/x
  3. Step 3: Cross multiply
    12,145,234,302.70x = 18,217,851,454.05 × 7,243,442,968.30
  4. Step 4: Simplify right side
    12,145,234,302.70x = 131,959,968,012,372,393,984
  5. Step 5: Solve for x
    x = 131,959,968,012,372,393,984/12,145,234,302.70
  6. Step 6: Final answer
    x = 10,865,164,452.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.