Home / 870,187.20-1,305,280.80-515,018.40

Finding the Fourth Proportional to 870,187.20, 1,305,280.80 and 515,018.40

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Solution

The fourth proportional to 870,187.20, 1,305,280.80 and 515,018.40 is: 772,527.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,187.20 : 1,305,280.80 = 515,018.40 : x
  2. Step 2: Convert to fraction form
    870,187.20/1,305,280.80 = 515,018.40/x
  3. Step 3: Cross multiply
    870,187.20x = 1,305,280.80 × 515,018.40
  4. Step 4: Simplify right side
    870,187.20x = 672,243,629,166.72
  5. Step 5: Solve for x
    x = 672,243,629,166.72/870,187.20
  6. Step 6: Final answer
    x = 772,527.60

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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.