Home / 763,407.80-1,145,111.70-719,862.20

Finding the Fourth Proportional to 763,407.80, 1,145,111.70 and 719,862.20

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Solution

The fourth proportional to 763,407.80, 1,145,111.70 and 719,862.20 is: 1,079,793.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,407.80 : 1,145,111.70 = 719,862.20 : x
  2. Step 2: Convert to fraction form
    763,407.80/1,145,111.70 = 719,862.20/x
  3. Step 3: Cross multiply
    763,407.80x = 1,145,111.70 × 719,862.20
  4. Step 4: Simplify right side
    763,407.80x = 824,322,627,607.74
  5. Step 5: Solve for x
    x = 824,322,627,607.74/763,407.80
  6. Step 6: Final answer
    x = 1,079,793.30

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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.