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Finding the Fourth Proportional to 859,765.72, 1,186,382.48 and 497,134.70

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Solution

The fourth proportional to 859,765.72, 1,186,382.48 and 497,134.70 is: 685,991.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,765.72 : 1,186,382.48 = 497,134.70 : x
  2. Step 2: Convert to fraction form
    859,765.72/1,186,382.48 = 497,134.70/x
  3. Step 3: Cross multiply
    859,765.72x = 1,186,382.48 × 497,134.70
  4. Step 4: Simplify right side
    859,765.72x = 589,791,898,280.06
  5. Step 5: Solve for x
    x = 589,791,898,280.06/859,765.72
  6. Step 6: Final answer
    x = 685,991.41

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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.