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Finding the Fourth Proportional to 869,876,669.80, 1,304,815,004.70 and 482,893,143.40

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Solution

The fourth proportional to 869,876,669.80, 1,304,815,004.70 and 482,893,143.40 is: 724,339,715.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,876,669.80 : 1,304,815,004.70 = 482,893,143.40 : x
  2. Step 2: Convert to fraction form
    869,876,669.80/1,304,815,004.70 = 482,893,143.40/x
  3. Step 3: Cross multiply
    869,876,669.80x = 1,304,815,004.70 × 482,893,143.40
  4. Step 4: Simplify right side
    869,876,669.80x = 630,086,219,175,068,800
  5. Step 5: Solve for x
    x = 630,086,219,175,068,800/869,876,669.80
  6. Step 6: Final answer
    x = 724,339,715.10

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1.5x scale

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.