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Finding the Fourth Proportional to 908,351.86, 1,253,465.40 and 545,791

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Solution

The fourth proportional to 908,351.86, 1,253,465.40 and 545,791 is: 753,155.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,351.86 : 1,253,465.40 = 545,791 : x
  2. Step 2: Convert to fraction form
    908,351.86/1,253,465.40 = 545,791/x
  3. Step 3: Cross multiply
    908,351.86x = 1,253,465.40 × 545,791
  4. Step 4: Simplify right side
    908,351.86x = 684,130,134,131.40
  5. Step 5: Solve for x
    x = 684,130,134,131.40/908,351.86
  6. Step 6: Final answer
    x = 753,155.43

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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.