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Finding the Fourth Proportional to 659,882, 910,639.59 and 358,076

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Solution

The fourth proportional to 659,882, 910,639.59 and 358,076 is: 494,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,882 : 910,639.59 = 358,076 : x
  2. Step 2: Convert to fraction form
    659,882/910,639.59 = 358,076/x
  3. Step 3: Cross multiply
    659,882x = 910,639.59 × 358,076
  4. Step 4: Simplify right side
    659,882x = 326,078,181,828.84
  5. Step 5: Solve for x
    x = 326,078,181,828.84/659,882
  6. Step 6: Final answer
    x = 494,146.20

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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.