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Finding the Fourth Proportional to 530,275.49, 731,779.97 and 291,811.49

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Solution

The fourth proportional to 530,275.49, 731,779.97 and 291,811.49 is: 402,699.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,275.49 : 731,779.97 = 291,811.49 : x
  2. Step 2: Convert to fraction form
    530,275.49/731,779.97 = 291,811.49/x
  3. Step 3: Cross multiply
    530,275.49x = 731,779.97 × 291,811.49
  4. Step 4: Simplify right side
    530,275.49x = 213,541,801,938.80
  5. Step 5: Solve for x
    x = 213,541,801,938.80/530,275.49
  6. Step 6: Final answer
    x = 402,699.74

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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.