Home / 487,630.40-731,445.60-404,686.40

Finding the Fourth Proportional to 487,630.40, 731,445.60 and 404,686.40

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Solution

The fourth proportional to 487,630.40, 731,445.60 and 404,686.40 is: 607,029.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,630.40 : 731,445.60 = 404,686.40 : x
  2. Step 2: Convert to fraction form
    487,630.40/731,445.60 = 404,686.40/x
  3. Step 3: Cross multiply
    487,630.40x = 731,445.60 × 404,686.40
  4. Step 4: Simplify right side
    487,630.40x = 296,006,086,659.84
  5. Step 5: Solve for x
    x = 296,006,086,659.84/487,630.40
  6. Step 6: Final answer
    x = 607,029.60

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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.