Home / 1,380,745,039.89-1,905,428,082.17-745,665,470.59

Finding the Fourth Proportional to 1,380,745,039.89, 1,905,428,082.17 and 745,665,470.59

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Solution

The fourth proportional to 1,380,745,039.89, 1,905,428,082.17 and 745,665,470.59 is: 1,029,018,310.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,745,039.89 : 1,905,428,082.17 = 745,665,470.59 : x
  2. Step 2: Convert to fraction form
    1,380,745,039.89/1,905,428,082.17 = 745,665,470.59/x
  3. Step 3: Cross multiply
    1,380,745,039.89x = 1,905,428,082.17 × 745,665,470.59
  4. Step 4: Simplify right side
    1,380,745,039.89x = 1,420,811,927,558,202,368
  5. Step 5: Solve for x
    x = 1,420,811,927,558,202,368/1,380,745,039.89
  6. Step 6: Final answer
    x = 1,029,018,310.05

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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.