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Finding the Fourth Proportional to 530,775.60, 732,530.84 and 315,916.35

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Solution

The fourth proportional to 530,775.60, 732,530.84 and 315,916.35 is: 436,000.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,775.60 : 732,530.84 = 315,916.35 : x
  2. Step 2: Convert to fraction form
    530,775.60/732,530.84 = 315,916.35/x
  3. Step 3: Cross multiply
    530,775.60x = 732,530.84 × 315,916.35
  4. Step 4: Simplify right side
    530,775.60x = 231,418,467,655.65
  5. Step 5: Solve for x
    x = 231,418,467,655.65/530,775.60
  6. Step 6: Final answer
    x = 436,000.58

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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.