Home / 1,146,330.40-1,721,331.60-911,624.80

Finding the Fourth Proportional to 1,146,330.40, 1,721,331.60 and 911,624.80

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Solution

The fourth proportional to 1,146,330.40, 1,721,331.60 and 911,624.80 is: 1,368,897.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146,330.40 : 1,721,331.60 = 911,624.80 : x
  2. Step 2: Convert to fraction form
    1,146,330.40/1,721,331.60 = 911,624.80/x
  3. Step 3: Cross multiply
    1,146,330.40x = 1,721,331.60 × 911,624.80
  4. Step 4: Simplify right side
    1,146,330.40x = 1,569,208,575,583.68
  5. Step 5: Solve for x
    x = 1,569,208,575,583.68/1,146,330.40
  6. Step 6: Final answer
    x = 1,368,897.29

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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.