Home / 1,280,508.47-1,921,531.56-511,868.89

Finding the Fourth Proportional to 1,280,508.47, 1,921,531.56 and 511,868.89

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Solution

The fourth proportional to 1,280,508.47, 1,921,531.56 and 511,868.89 is: 768,110.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,508.47 : 1,921,531.56 = 511,868.89 : x
  2. Step 2: Convert to fraction form
    1,280,508.47/1,921,531.56 = 511,868.89/x
  3. Step 3: Cross multiply
    1,280,508.47x = 1,921,531.56 × 511,868.89
  4. Step 4: Simplify right side
    1,280,508.47x = 983,572,226,717.17
  5. Step 5: Solve for x
    x = 983,572,226,717.17/1,280,508.47
  6. Step 6: Final answer
    x = 768,110.68

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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.