Home / 1,128,815.40-1,691,840.70-497,058.60

Finding the Fourth Proportional to 1,128,815.40, 1,691,840.70 and 497,058.60

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Solution

The fourth proportional to 1,128,815.40, 1,691,840.70 and 497,058.60 is: 744,979.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,815.40 : 1,691,840.70 = 497,058.60 : x
  2. Step 2: Convert to fraction form
    1,128,815.40/1,691,840.70 = 497,058.60/x
  3. Step 3: Cross multiply
    1,128,815.40x = 1,691,840.70 × 497,058.60
  4. Step 4: Simplify right side
    1,128,815.40x = 840,943,969,765.02
  5. Step 5: Solve for x
    x = 840,943,969,765.02/1,128,815.40
  6. Step 6: Final answer
    x = 744,979.18

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Double scale
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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.