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Finding the Fourth Proportional to 706,489.78, 974,981.60 and 404,742.10

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Solution

The fourth proportional to 706,489.78, 974,981.60 and 404,742.10 is: 558,558.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,489.78 : 974,981.60 = 404,742.10 : x
  2. Step 2: Convert to fraction form
    706,489.78/974,981.60 = 404,742.10/x
  3. Step 3: Cross multiply
    706,489.78x = 974,981.60 × 404,742.10
  4. Step 4: Simplify right side
    706,489.78x = 394,616,098,221.65
  5. Step 5: Solve for x
    x = 394,616,098,221.65/706,489.78
  6. Step 6: Final answer
    x = 558,558.82

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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.