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Finding the Fourth Proportional to 532,985.80, 735,284.14 and 318,000.86

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Solution

The fourth proportional to 532,985.80, 735,284.14 and 318,000.86 is: 438,700.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,985.80 : 735,284.14 = 318,000.86 : x
  2. Step 2: Convert to fraction form
    532,985.80/735,284.14 = 318,000.86/x
  3. Step 3: Cross multiply
    532,985.80x = 735,284.14 × 318,000.86
  4. Step 4: Simplify right side
    532,985.80x = 233,820,988,864.36
  5. Step 5: Solve for x
    x = 233,820,988,864.36/532,985.80
  6. Step 6: Final answer
    x = 438,700.22

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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.