Home / 879,962,845.20-1,318,432,613.40-418,908,253.20

Finding the Fourth Proportional to 879,962,845.20, 1,318,432,613.40 and 418,908,253.20

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Solution

The fourth proportional to 879,962,845.20, 1,318,432,613.40 and 418,908,253.20 is: 627,642,753.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,962,845.20 : 1,318,432,613.40 = 418,908,253.20 : x
  2. Step 2: Convert to fraction form
    879,962,845.20/1,318,432,613.40 = 418,908,253.20/x
  3. Step 3: Cross multiply
    879,962,845.20x = 1,318,432,613.40 × 418,908,253.20
  4. Step 4: Simplify right side
    879,962,845.20x = 552,302,303,041,304,960
  5. Step 5: Solve for x
    x = 552,302,303,041,304,960/879,962,845.20
  6. Step 6: Final answer
    x = 627,642,753.39

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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.