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Finding the Fourth Proportional to 615,730,968.90, 924,119,000.55 and 252,486,015.30

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Solution

The fourth proportional to 615,730,968.90, 924,119,000.55 and 252,486,015.30 is: 378,943,298.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,730,968.90 : 924,119,000.55 = 252,486,015.30 : x
  2. Step 2: Convert to fraction form
    615,730,968.90/924,119,000.55 = 252,486,015.30/x
  3. Step 3: Cross multiply
    615,730,968.90x = 924,119,000.55 × 252,486,015.30
  4. Step 4: Simplify right side
    615,730,968.90x = 233,327,124,111,888,000
  5. Step 5: Solve for x
    x = 233,327,124,111,888,000/615,730,968.90
  6. Step 6: Final answer
    x = 378,943,298.12

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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.