Home / 781,868.80-1,079,094.72-495,415.56

Finding the Fourth Proportional to 781,868.80, 1,079,094.72 and 495,415.56

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Solution

The fourth proportional to 781,868.80, 1,079,094.72 and 495,415.56 is: 683,746.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,868.80 : 1,079,094.72 = 495,415.56 : x
  2. Step 2: Convert to fraction form
    781,868.80/1,079,094.72 = 495,415.56/x
  3. Step 3: Cross multiply
    781,868.80x = 1,079,094.72 × 495,415.56
  4. Step 4: Simplify right side
    781,868.80x = 534,600,315,001.84
  5. Step 5: Solve for x
    x = 534,600,315,001.84/781,868.80
  6. Step 6: Final answer
    x = 683,746.83

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1.5x scale

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.