Home / 763,121.40-1,053,111.60-476,807.55

Finding the Fourth Proportional to 763,121.40, 1,053,111.60 and 476,807.55

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Solution

The fourth proportional to 763,121.40, 1,053,111.60 and 476,807.55 is: 657,996.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,121.40 : 1,053,111.60 = 476,807.55 : x
  2. Step 2: Convert to fraction form
    763,121.40/1,053,111.60 = 476,807.55/x
  3. Step 3: Cross multiply
    763,121.40x = 1,053,111.60 × 476,807.55
  4. Step 4: Simplify right side
    763,121.40x = 502,131,561,872.58
  5. Step 5: Solve for x
    x = 502,131,561,872.58/763,121.40
  6. Step 6: Final answer
    x = 657,996.96

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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.