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Finding the Fourth Proportional to 659,808, 910,539.90 and 358,002

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Solution

The fourth proportional to 659,808, 910,539.90 and 358,002 is: 494,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,808 : 910,539.90 = 358,002 : x
  2. Step 2: Convert to fraction form
    659,808/910,539.90 = 358,002/x
  3. Step 3: Cross multiply
    659,808x = 910,539.90 × 358,002
  4. Step 4: Simplify right side
    659,808x = 325,975,105,279.80
  5. Step 5: Solve for x
    x = 325,975,105,279.80/659,808
  6. Step 6: Final answer
    x = 494,045.40

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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.