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Finding the Fourth Proportional to 709,825.59, 979,562.63 and 387,543.06

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Solution

The fourth proportional to 709,825.59, 979,562.63 and 387,543.06 is: 534,811.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,825.59 : 979,562.63 = 387,543.06 : x
  2. Step 2: Convert to fraction form
    709,825.59/979,562.63 = 387,543.06/x
  3. Step 3: Cross multiply
    709,825.59x = 979,562.63 × 387,543.06
  4. Step 4: Simplify right side
    709,825.59x = 379,622,700,060.71
  5. Step 5: Solve for x
    x = 379,622,700,060.71/709,825.59
  6. Step 6: Final answer
    x = 534,811.23

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.