Home / 390,892,956.30-586,338,963.98-99,760,110.30

Finding the Fourth Proportional to 390,892,956.30, 586,338,963.98 and 99,760,110.30

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Solution

The fourth proportional to 390,892,956.30, 586,338,963.98 and 99,760,110.30 is: 149,640,045.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,892,956.30 : 586,338,963.98 = 99,760,110.30 : x
  2. Step 2: Convert to fraction form
    390,892,956.30/586,338,963.98 = 99,760,110.30/x
  3. Step 3: Cross multiply
    390,892,956.30x = 586,338,963.98 × 99,760,110.30
  4. Step 4: Simplify right side
    390,892,956.30x = 58,493,239,719,333,728
  5. Step 5: Solve for x
    x = 58,493,239,719,333,728/390,892,956.30
  6. Step 6: Final answer
    x = 149,640,045.38

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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.