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Finding the Fourth Proportional to 580,409.13, 870,612.54 and 153,987.70

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Solution

The fourth proportional to 580,409.13, 870,612.54 and 153,987.70 is: 230,981.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,409.13 : 870,612.54 = 153,987.70 : x
  2. Step 2: Convert to fraction form
    580,409.13/870,612.54 = 153,987.70/x
  3. Step 3: Cross multiply
    580,409.13x = 870,612.54 × 153,987.70
  4. Step 4: Simplify right side
    580,409.13x = 134,063,622,897.82
  5. Step 5: Solve for x
    x = 134,063,622,897.82/580,409.13
  6. Step 6: Final answer
    x = 230,981.24

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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.