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Finding the Fourth Proportional to 530,712.42, 732,366.18 and 288,993.12

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Solution

The fourth proportional to 530,712.42, 732,366.18 and 288,993.12 is: 398,801.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,712.42 : 732,366.18 = 288,993.12 : x
  2. Step 2: Convert to fraction form
    530,712.42/732,366.18 = 288,993.12/x
  3. Step 3: Cross multiply
    530,712.42x = 732,366.18 × 288,993.12
  4. Step 4: Simplify right side
    530,712.42x = 211,648,787,340.68
  5. Step 5: Solve for x
    x = 211,648,787,340.68/530,712.42
  6. Step 6: Final answer
    x = 398,801.27

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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.