Home / 870,812.60-1,306,142.10-239,670.20

Finding the Fourth Proportional to 870,812.60, 1,306,142.10 and 239,670.20

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Solution

The fourth proportional to 870,812.60, 1,306,142.10 and 239,670.20 is: 359,484.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,812.60 : 1,306,142.10 = 239,670.20 : x
  2. Step 2: Convert to fraction form
    870,812.60/1,306,142.10 = 239,670.20/x
  3. Step 3: Cross multiply
    870,812.60x = 1,306,142.10 × 239,670.20
  4. Step 4: Simplify right side
    870,812.60x = 313,043,338,335.42
  5. Step 5: Solve for x
    x = 313,043,338,335.42/870,812.60
  6. Step 6: Final answer
    x = 359,484.16

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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.