Home / 780,909.39-1,077,734.45-475,006.86

Finding the Fourth Proportional to 780,909.39, 1,077,734.45 and 475,006.86

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Solution

The fourth proportional to 780,909.39, 1,077,734.45 and 475,006.86 is: 655,557.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,909.39 : 1,077,734.45 = 475,006.86 : x
  2. Step 2: Convert to fraction form
    780,909.39/1,077,734.45 = 475,006.86/x
  3. Step 3: Cross multiply
    780,909.39x = 1,077,734.45 × 475,006.86
  4. Step 4: Simplify right side
    780,909.39x = 511,931,258,195.84
  5. Step 5: Solve for x
    x = 511,931,258,195.84/780,909.39
  6. Step 6: Final answer
    x = 655,557.82

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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.