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Finding the Fourth Proportional to 570,505.92, 787,327.20 and 315,885.12

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Solution

The fourth proportional to 570,505.92, 787,327.20 and 315,885.12 is: 435,937.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,505.92 : 787,327.20 = 315,885.12 : x
  2. Step 2: Convert to fraction form
    570,505.92/787,327.20 = 315,885.12/x
  3. Step 3: Cross multiply
    570,505.92x = 787,327.20 × 315,885.12
  4. Step 4: Simplify right side
    570,505.92x = 248,704,947,051.26
  5. Step 5: Solve for x
    x = 248,704,947,051.26/570,505.92
  6. Step 6: Final answer
    x = 435,937.54

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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.