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Finding the Fourth Proportional to 572,800.32, 790,471.68 and 318,175.20

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Solution

The fourth proportional to 572,800.32, 790,471.68 and 318,175.20 is: 439,085.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,800.32 : 790,471.68 = 318,175.20 : x
  2. Step 2: Convert to fraction form
    572,800.32/790,471.68 = 318,175.20/x
  3. Step 3: Cross multiply
    572,800.32x = 790,471.68 × 318,175.20
  4. Step 4: Simplify right side
    572,800.32x = 251,508,484,878.34
  5. Step 5: Solve for x
    x = 251,508,484,878.34/572,800.32
  6. Step 6: Final answer
    x = 439,085.80

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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.