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Finding the Fourth Proportional to 571,640.16, 788,910.72 and 317,073.60

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Solution

The fourth proportional to 571,640.16, 788,910.72 and 317,073.60 is: 437,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,640.16 : 788,910.72 = 317,073.60 : x
  2. Step 2: Convert to fraction form
    571,640.16/788,910.72 = 317,073.60/x
  3. Step 3: Cross multiply
    571,640.16x = 788,910.72 × 317,073.60
  4. Step 4: Simplify right side
    571,640.16x = 250,142,762,068.99
  5. Step 5: Solve for x
    x = 250,142,762,068.99/571,640.16
  6. Step 6: Final answer
    x = 437,587.80

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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.