Home / 870,863.80-1,306,295.70-496,924.60

Finding the Fourth Proportional to 870,863.80, 1,306,295.70 and 496,924.60

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Solution

The fourth proportional to 870,863.80, 1,306,295.70 and 496,924.60 is: 745,386.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,863.80 : 1,306,295.70 = 496,924.60 : x
  2. Step 2: Convert to fraction form
    870,863.80/1,306,295.70 = 496,924.60/x
  3. Step 3: Cross multiply
    870,863.80x = 1,306,295.70 × 496,924.60
  4. Step 4: Simplify right side
    870,863.80x = 649,130,468,204.22
  5. Step 5: Solve for x
    x = 649,130,468,204.22/870,863.80
  6. Step 6: Final answer
    x = 745,386.90

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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.