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Finding the Fourth Proportional to 530,699.80, 732,355.20 and 288,985.24

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Solution

The fourth proportional to 530,699.80, 732,355.20 and 288,985.24 is: 398,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,699.80 : 732,355.20 = 288,985.24 : x
  2. Step 2: Convert to fraction form
    530,699.80/732,355.20 = 288,985.24/x
  3. Step 3: Cross multiply
    530,699.80x = 732,355.20 × 288,985.24
  4. Step 4: Simplify right side
    530,699.80x = 211,639,843,237.25
  5. Step 5: Solve for x
    x = 211,639,843,237.25/530,699.80
  6. Step 6: Final answer
    x = 398,793.90

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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.