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Finding the Fourth Proportional to 615,643.30, 924,032.62 and 312,250.39

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Solution

The fourth proportional to 615,643.30, 924,032.62 and 312,250.39 is: 468,663.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,643.30 : 924,032.62 = 312,250.39 : x
  2. Step 2: Convert to fraction form
    615,643.30/924,032.62 = 312,250.39/x
  3. Step 3: Cross multiply
    615,643.30x = 924,032.62 × 312,250.39
  4. Step 4: Simplify right side
    615,643.30x = 288,529,545,967.72
  5. Step 5: Solve for x
    x = 288,529,545,967.72/615,643.30
  6. Step 6: Final answer
    x = 468,663.50

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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.