Home / 687,060,561,409.95-948,186,634,717.20-378,411,859,060.36

Finding the Fourth Proportional to 687,060,561,409.95, 948,186,634,717.20 and 378,411,859,060.36

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Solution

The fourth proportional to 687,060,561,409.95, 948,186,634,717.20 and 378,411,859,060.36 is: 522,232,081,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,060,561,409.95 : 948,186,634,717.20 = 378,411,859,060.36 : x
  2. Step 2: Convert to fraction form
    687,060,561,409.95/948,186,634,717.20 = 378,411,859,060.36/x
  3. Step 3: Cross multiply
    687,060,561,409.95x = 948,186,634,717.20 × 378,411,859,060.36
  4. Step 4: Simplify right side
    687,060,561,409.95x = 358,805,067,179,522,097,414,144
  5. Step 5: Solve for x
    x = 358,805,067,179,522,097,414,144/687,060,561,409.95
  6. Step 6: Final answer
    x = 522,232,081,613.30

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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.