Home / 813,963,325.92-1,123,269,942.87-456,681,780.78

Finding the Fourth Proportional to 813,963,325.92, 1,123,269,942.87 and 456,681,780.78

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Solution

The fourth proportional to 813,963,325.92, 1,123,269,942.87 and 456,681,780.78 is: 630,221,167.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,963,325.92 : 1,123,269,942.87 = 456,681,780.78 : x
  2. Step 2: Convert to fraction form
    813,963,325.92/1,123,269,942.87 = 456,681,780.78/x
  3. Step 3: Cross multiply
    813,963,325.92x = 1,123,269,942.87 × 456,681,780.78
  4. Step 4: Simplify right side
    813,963,325.92x = 512,976,917,806,520,384
  5. Step 5: Solve for x
    x = 512,976,917,806,520,384/813,963,325.92
  6. Step 6: Final answer
    x = 630,221,167.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.