Home / 865,613.20-1,298,419.80-492,365.20

Finding the Fourth Proportional to 865,613.20, 1,298,419.80 and 492,365.20

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Solution

The fourth proportional to 865,613.20, 1,298,419.80 and 492,365.20 is: 738,547.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,613.20 : 1,298,419.80 = 492,365.20 : x
  2. Step 2: Convert to fraction form
    865,613.20/1,298,419.80 = 492,365.20/x
  3. Step 3: Cross multiply
    865,613.20x = 1,298,419.80 × 492,365.20
  4. Step 4: Simplify right side
    865,613.20x = 639,296,724,510.96
  5. Step 5: Solve for x
    x = 639,296,724,510.96/865,613.20
  6. Step 6: Final answer
    x = 738,547.80

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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.