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Finding the Fourth Proportional to 530,476.28, 732,066.60 and 288,765.80

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Solution

The fourth proportional to 530,476.28, 732,066.60 and 288,765.80 is: 398,501.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,476.28 : 732,066.60 = 288,765.80 : x
  2. Step 2: Convert to fraction form
    530,476.28/732,066.60 = 288,765.80/x
  3. Step 3: Cross multiply
    530,476.28x = 732,066.60 × 288,765.80
  4. Step 4: Simplify right side
    530,476.28x = 211,395,797,402.28
  5. Step 5: Solve for x
    x = 211,395,797,402.28/530,476.28
  6. Step 6: Final answer
    x = 398,501.88

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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.