Home / 687,445,862,824.94-948,632,545,836.92-378,779,948,591.76

Finding the Fourth Proportional to 687,445,862,824.94, 948,632,545,836.92 and 378,779,948,591.76

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Solution

The fourth proportional to 687,445,862,824.94, 948,632,545,836.92 and 378,779,948,591.76 is: 522,692,776,807.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,445,862,824.94 : 948,632,545,836.92 = 378,779,948,591.76 : x
  2. Step 2: Convert to fraction form
    687,445,862,824.94/948,632,545,836.92 = 378,779,948,591.76/x
  3. Step 3: Cross multiply
    687,445,862,824.94x = 948,632,545,836.92 × 378,779,948,591.76
  4. Step 4: Simplify right side
    687,445,862,824.94x = 359,322,986,944,579,026,026,496
  5. Step 5: Solve for x
    x = 359,322,986,944,579,026,026,496/687,445,862,824.94
  6. Step 6: Final answer
    x = 522,692,776,807.19

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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.