Home / 612,389,980.60-918,584,970.90-440,203,096.60

Finding the Fourth Proportional to 612,389,980.60, 918,584,970.90 and 440,203,096.60

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Solution

The fourth proportional to 612,389,980.60, 918,584,970.90 and 440,203,096.60 is: 660,304,644.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,389,980.60 : 918,584,970.90 = 440,203,096.60 : x
  2. Step 2: Convert to fraction form
    612,389,980.60/918,584,970.90 = 440,203,096.60/x
  3. Step 3: Cross multiply
    612,389,980.60x = 918,584,970.90 × 440,203,096.60
  4. Step 4: Simplify right side
    612,389,980.60x = 404,363,948,680,400,896
  5. Step 5: Solve for x
    x = 404,363,948,680,400,896/612,389,980.60
  6. Step 6: Final answer
    x = 660,304,644.90

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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.