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Finding the Fourth Proportional to 659,877, 910,632.69 and 358,071

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Solution

The fourth proportional to 659,877, 910,632.69 and 358,071 is: 494,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,877 : 910,632.69 = 358,071 : x
  2. Step 2: Convert to fraction form
    659,877/910,632.69 = 358,071/x
  3. Step 3: Cross multiply
    659,877x = 910,632.69 × 358,071
  4. Step 4: Simplify right side
    659,877x = 326,071,157,940.99
  5. Step 5: Solve for x
    x = 326,071,157,940.99/659,877
  6. Step 6: Final answer
    x = 494,139.30

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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.