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Finding the Fourth Proportional to 926,887, 1,390,339 and 365,921.52

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Solution

The fourth proportional to 926,887, 1,390,339 and 365,921.52 is: 548,885.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,887 : 1,390,339 = 365,921.52 : x
  2. Step 2: Convert to fraction form
    926,887/1,390,339 = 365,921.52/x
  3. Step 3: Cross multiply
    926,887x = 1,390,339 × 365,921.52
  4. Step 4: Simplify right side
    926,887x = 508,754,960,195.28
  5. Step 5: Solve for x
    x = 508,754,960,195.28/926,887
  6. Step 6: Final answer
    x = 548,885.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.