Home / 865,629.70-1,298,444.55-492,381.70

Finding the Fourth Proportional to 865,629.70, 1,298,444.55 and 492,381.70

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Solution

The fourth proportional to 865,629.70, 1,298,444.55 and 492,381.70 is: 738,572.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,629.70 : 1,298,444.55 = 492,381.70 : x
  2. Step 2: Convert to fraction form
    865,629.70/1,298,444.55 = 492,381.70/x
  3. Step 3: Cross multiply
    865,629.70x = 1,298,444.55 × 492,381.70
  4. Step 4: Simplify right side
    865,629.70x = 639,330,334,884.74
  5. Step 5: Solve for x
    x = 639,330,334,884.74/865,629.70
  6. Step 6: Final answer
    x = 738,572.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.