Home / 7,128,000.80-10,692,001.20-6,918,048.80

Finding the Fourth Proportional to 7,128,000.80, 10,692,001.20 and 6,918,048.80

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Solution

The fourth proportional to 7,128,000.80, 10,692,001.20 and 6,918,048.80 is: 10,377,073.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,000.80 : 10,692,001.20 = 6,918,048.80 : x
  2. Step 2: Convert to fraction form
    7,128,000.80/10,692,001.20 = 6,918,048.80/x
  3. Step 3: Cross multiply
    7,128,000.80x = 10,692,001.20 × 6,918,048.80
  4. Step 4: Simplify right side
    7,128,000.80x = 73,967,786,071,258.55
  5. Step 5: Solve for x
    x = 73,967,786,071,258.55/7,128,000.80
  6. Step 6: Final answer
    x = 10,377,073.20

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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.