Home / 687,445,862,826.92-948,632,545,839.68-378,779,948,593.76

Finding the Fourth Proportional to 687,445,862,826.92, 948,632,545,839.68 and 378,779,948,593.76

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Solution

The fourth proportional to 687,445,862,826.92, 948,632,545,839.68 and 378,779,948,593.76 is: 522,692,776,809.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,445,862,826.92 : 948,632,545,839.68 = 378,779,948,593.76 : x
  2. Step 2: Convert to fraction form
    687,445,862,826.92/948,632,545,839.68 = 378,779,948,593.76/x
  3. Step 3: Cross multiply
    687,445,862,826.92x = 948,632,545,839.68 × 378,779,948,593.76
  4. Step 4: Simplify right side
    687,445,862,826.92x = 359,322,986,947,521,682,604,032
  5. Step 5: Solve for x
    x = 359,322,986,947,521,682,604,032/687,445,862,826.92
  6. Step 6: Final answer
    x = 522,692,776,809.96

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Double scale
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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.