Home / 530,397.72-731,948.40-288,679.95

Finding the Fourth Proportional to 530,397.72, 731,948.40 and 288,679.95

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Solution

The fourth proportional to 530,397.72, 731,948.40 and 288,679.95 is: 398,378.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,397.72 : 731,948.40 = 288,679.95 : x
  2. Step 2: Convert to fraction form
    530,397.72/731,948.40 = 288,679.95/x
  3. Step 3: Cross multiply
    530,397.72x = 731,948.40 × 288,679.95
  4. Step 4: Simplify right side
    530,397.72x = 211,298,827,514.58
  5. Step 5: Solve for x
    x = 211,298,827,514.58/530,397.72
  6. Step 6: Final answer
    x = 398,378.08

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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.