Home / 865,536.78-1,298,454.60-385,934.97

Finding the Fourth Proportional to 865,536.78, 1,298,454.60 and 385,934.97

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Solution

The fourth proportional to 865,536.78, 1,298,454.60 and 385,934.97 is: 578,969.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,536.78 : 1,298,454.60 = 385,934.97 : x
  2. Step 2: Convert to fraction form
    865,536.78/1,298,454.60 = 385,934.97/x
  3. Step 3: Cross multiply
    865,536.78x = 1,298,454.60 × 385,934.97
  4. Step 4: Simplify right side
    865,536.78x = 501,119,037,097.36
  5. Step 5: Solve for x
    x = 501,119,037,097.36/865,536.78
  6. Step 6: Final answer
    x = 578,969.08

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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.