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Finding the Fourth Proportional to 530,496.99, 732,085.92 and 288,781.40

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Solution

The fourth proportional to 530,496.99, 732,085.92 and 288,781.40 is: 398,518.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,496.99 : 732,085.92 = 288,781.40 : x
  2. Step 2: Convert to fraction form
    530,496.99/732,085.92 = 288,781.40/x
  3. Step 3: Cross multiply
    530,496.99x = 732,085.92 × 288,781.40
  4. Step 4: Simplify right side
    530,496.99x = 211,412,793,237.46
  5. Step 5: Solve for x
    x = 211,412,793,237.46/530,496.99
  6. Step 6: Final answer
    x = 398,518.37

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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.