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Finding the Fourth Proportional to 604,878.30, 907,317.45 and 392,301.90

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Solution

The fourth proportional to 604,878.30, 907,317.45 and 392,301.90 is: 588,452.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,878.30 : 907,317.45 = 392,301.90 : x
  2. Step 2: Convert to fraction form
    604,878.30/907,317.45 = 392,301.90/x
  3. Step 3: Cross multiply
    604,878.30x = 907,317.45 × 392,301.90
  4. Step 4: Simplify right side
    604,878.30x = 355,942,359,538.16
  5. Step 5: Solve for x
    x = 355,942,359,538.16/604,878.30
  6. Step 6: Final answer
    x = 588,452.85

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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.