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Finding the Fourth Proportional to 658,082.87, 908,070.91 and 386,051.51

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Solution

The fourth proportional to 658,082.87, 908,070.91 and 386,051.51 is: 532,702.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,082.87 : 908,070.91 = 386,051.51 : x
  2. Step 2: Convert to fraction form
    658,082.87/908,070.91 = 386,051.51/x
  3. Step 3: Cross multiply
    658,082.87x = 908,070.91 × 386,051.51
  4. Step 4: Simplify right side
    658,082.87x = 350,562,145,992.57
  5. Step 5: Solve for x
    x = 350,562,145,992.57/658,082.87
  6. Step 6: Final answer
    x = 532,702.13

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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.