Home / 865,643.20-1,298,464.80-492,395.20

Finding the Fourth Proportional to 865,643.20, 1,298,464.80 and 492,395.20

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Solution

The fourth proportional to 865,643.20, 1,298,464.80 and 492,395.20 is: 738,592.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,643.20 : 1,298,464.80 = 492,395.20 : x
  2. Step 2: Convert to fraction form
    865,643.20/1,298,464.80 = 492,395.20/x
  3. Step 3: Cross multiply
    865,643.20x = 1,298,464.80 × 492,395.20
  4. Step 4: Simplify right side
    865,643.20x = 639,357,834,888.96
  5. Step 5: Solve for x
    x = 639,357,834,888.96/865,643.20
  6. Step 6: Final answer
    x = 738,592.80

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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.