Home / 808,001.20-1,212,001.80-358,721.20

Finding the Fourth Proportional to 808,001.20, 1,212,001.80 and 358,721.20

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Solution

The fourth proportional to 808,001.20, 1,212,001.80 and 358,721.20 is: 538,081.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,001.20 : 1,212,001.80 = 358,721.20 : x
  2. Step 2: Convert to fraction form
    808,001.20/1,212,001.80 = 358,721.20/x
  3. Step 3: Cross multiply
    808,001.20x = 1,212,001.80 × 358,721.20
  4. Step 4: Simplify right side
    808,001.20x = 434,770,740,098.16
  5. Step 5: Solve for x
    x = 434,770,740,098.16/808,001.20
  6. Step 6: Final answer
    x = 538,081.80

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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.