Home / 782,987.38-1,080,598.42-438,881.76

Finding the Fourth Proportional to 782,987.38, 1,080,598.42 and 438,881.76

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Solution

The fourth proportional to 782,987.38, 1,080,598.42 and 438,881.76 is: 605,699.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,987.38 : 1,080,598.42 = 438,881.76 : x
  2. Step 2: Convert to fraction form
    782,987.38/1,080,598.42 = 438,881.76/x
  3. Step 3: Cross multiply
    782,987.38x = 1,080,598.42 × 438,881.76
  4. Step 4: Simplify right side
    782,987.38x = 474,254,936,971.42
  5. Step 5: Solve for x
    x = 474,254,936,971.42/782,987.38
  6. Step 6: Final answer
    x = 605,699.34

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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.