Home / 822,764.07-1,135,355.81-478,654.20

Finding the Fourth Proportional to 822,764.07, 1,135,355.81 and 478,654.20

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Solution

The fourth proportional to 822,764.07, 1,135,355.81 and 478,654.20 is: 660,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,764.07 : 1,135,355.81 = 478,654.20 : x
  2. Step 2: Convert to fraction form
    822,764.07/1,135,355.81 = 478,654.20/x
  3. Step 3: Cross multiply
    822,764.07x = 1,135,355.81 × 478,654.20
  4. Step 4: Simplify right side
    822,764.07x = 543,442,824,557.63
  5. Step 5: Solve for x
    x = 543,442,824,557.63/822,764.07
  6. Step 6: Final answer
    x = 660,508.70

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.