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Finding the Fourth Proportional to 530,000.64, 731,237.28 and 323,312.72

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Solution

The fourth proportional to 530,000.64, 731,237.28 and 323,312.72 is: 446,071.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,000.64 : 731,237.28 = 323,312.72 : x
  2. Step 2: Convert to fraction form
    530,000.64/731,237.28 = 323,312.72/x
  3. Step 3: Cross multiply
    530,000.64x = 731,237.28 × 323,312.72
  4. Step 4: Simplify right side
    530,000.64x = 236,418,313,962.20
  5. Step 5: Solve for x
    x = 236,418,313,962.20/530,000.64
  6. Step 6: Final answer
    x = 446,071.75

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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.