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Finding the Fourth Proportional to 530,647.91, 732,290.52 and 288,930.34

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Solution

The fourth proportional to 530,647.91, 732,290.52 and 288,930.34 is: 398,721.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,647.91 : 732,290.52 = 288,930.34 : x
  2. Step 2: Convert to fraction form
    530,647.91/732,290.52 = 288,930.34/x
  3. Step 3: Cross multiply
    530,647.91x = 732,290.52 × 288,930.34
  4. Step 4: Simplify right side
    530,647.91x = 211,580,950,921.23
  5. Step 5: Solve for x
    x = 211,580,950,921.23/530,647.91
  6. Step 6: Final answer
    x = 398,721.92

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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.