Home / 813,888,082.60-1,220,832,123.90-782,143,340.20

Finding the Fourth Proportional to 813,888,082.60, 1,220,832,123.90 and 782,143,340.20

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Solution

The fourth proportional to 813,888,082.60, 1,220,832,123.90 and 782,143,340.20 is: 1,173,215,010.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,888,082.60 : 1,220,832,123.90 = 782,143,340.20 : x
  2. Step 2: Convert to fraction form
    813,888,082.60/1,220,832,123.90 = 782,143,340.20/x
  3. Step 3: Cross multiply
    813,888,082.60x = 1,220,832,123.90 × 782,143,340.20
  4. Step 4: Simplify right side
    813,888,082.60x = 954,865,715,210,606,336
  5. Step 5: Solve for x
    x = 954,865,715,210,606,336/813,888,082.60
  6. Step 6: Final answer
    x = 1,173,215,010.30

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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.