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Finding the Fourth Proportional to 922,752,000.30, 1,384,128,000.45 and 861,837,926.70

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Solution

The fourth proportional to 922,752,000.30, 1,384,128,000.45 and 861,837,926.70 is: 1,292,756,890.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,752,000.30 : 1,384,128,000.45 = 861,837,926.70 : x
  2. Step 2: Convert to fraction form
    922,752,000.30/1,384,128,000.45 = 861,837,926.70/x
  3. Step 3: Cross multiply
    922,752,000.30x = 1,384,128,000.45 × 861,837,926.70
  4. Step 4: Simplify right side
    922,752,000.30x = 1,192,894,006,195,244,800
  5. Step 5: Solve for x
    x = 1,192,894,006,195,244,800/922,752,000.30
  6. Step 6: Final answer
    x = 1,292,756,890.05

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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.