Home / 717,930,187.34-990,743,660.43-387,905,326.34

Finding the Fourth Proportional to 717,930,187.34, 990,743,660.43 and 387,905,326.34

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Solution

The fourth proportional to 717,930,187.34, 990,743,660.43 and 387,905,326.34 is: 535,309,351.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,930,187.34 : 990,743,660.43 = 387,905,326.34 : x
  2. Step 2: Convert to fraction form
    717,930,187.34/990,743,660.43 = 387,905,326.34/x
  3. Step 3: Cross multiply
    717,930,187.34x = 990,743,660.43 × 387,905,326.34
  4. Step 4: Simplify right side
    717,930,187.34x = 384,314,742,918,385,280
  5. Step 5: Solve for x
    x = 384,314,742,918,385,280/717,930,187.34
  6. Step 6: Final answer
    x = 535,309,351.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.