Home / 865,334.70-1,298,002.05-492,086.70

Finding the Fourth Proportional to 865,334.70, 1,298,002.05 and 492,086.70

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Solution

The fourth proportional to 865,334.70, 1,298,002.05 and 492,086.70 is: 738,130.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,334.70 : 1,298,002.05 = 492,086.70 : x
  2. Step 2: Convert to fraction form
    865,334.70/1,298,002.05 = 492,086.70/x
  3. Step 3: Cross multiply
    865,334.70x = 1,298,002.05 × 492,086.70
  4. Step 4: Simplify right side
    865,334.70x = 638,729,545,377.74
  5. Step 5: Solve for x
    x = 638,729,545,377.74/865,334.70
  6. Step 6: Final answer
    x = 738,130.05

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Double scale
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Similar ratio
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1.5x scale

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.