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Finding the Fourth Proportional to 659,885.90, 910,639.33 and 358,079.90

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Solution

The fourth proportional to 659,885.90, 910,639.33 and 358,079.90 is: 494,148.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,885.90 : 910,639.33 = 358,079.90 : x
  2. Step 2: Convert to fraction form
    659,885.90/910,639.33 = 358,079.90/x
  3. Step 3: Cross multiply
    659,885.90x = 910,639.33 × 358,079.90
  4. Step 4: Simplify right side
    659,885.90x = 326,081,634,774.07
  5. Step 5: Solve for x
    x = 326,081,634,774.07/659,885.90
  6. Step 6: Final answer
    x = 494,148.51

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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.