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Finding the Fourth Proportional to 615,730,968.40, 924,118,999.80 and 252,486,014.80

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Solution

The fourth proportional to 615,730,968.40, 924,118,999.80 and 252,486,014.80 is: 378,943,297.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,730,968.40 : 924,118,999.80 = 252,486,014.80 : x
  2. Step 2: Convert to fraction form
    615,730,968.40/924,118,999.80 = 252,486,014.80/x
  3. Step 3: Cross multiply
    615,730,968.40x = 924,118,999.80 × 252,486,014.80
  4. Step 4: Simplify right side
    615,730,968.40x = 233,327,123,460,464,000
  5. Step 5: Solve for x
    x = 233,327,123,460,464,000/615,730,968.40
  6. Step 6: Final answer
    x = 378,943,297.37

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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.