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Finding the Fourth Proportional to 570,349.68, 787,000.12 and 315,700.28

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Solution

The fourth proportional to 570,349.68, 787,000.12 and 315,700.28 is: 435,620.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,349.68 : 787,000.12 = 315,700.28 : x
  2. Step 2: Convert to fraction form
    570,349.68/787,000.12 = 315,700.28/x
  3. Step 3: Cross multiply
    570,349.68x = 787,000.12 × 315,700.28
  4. Step 4: Simplify right side
    570,349.68x = 248,456,158,244.03
  5. Step 5: Solve for x
    x = 248,456,158,244.03/570,349.68
  6. Step 6: Final answer
    x = 435,620.76

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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.