Home / 785,423.60-1,178,135.40-727,686.80

Finding the Fourth Proportional to 785,423.60, 1,178,135.40 and 727,686.80

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Solution

The fourth proportional to 785,423.60, 1,178,135.40 and 727,686.80 is: 1,091,530.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,423.60 : 1,178,135.40 = 727,686.80 : x
  2. Step 2: Convert to fraction form
    785,423.60/1,178,135.40 = 727,686.80/x
  3. Step 3: Cross multiply
    785,423.60x = 1,178,135.40 × 727,686.80
  4. Step 4: Simplify right side
    785,423.60x = 857,313,579,192.72
  5. Step 5: Solve for x
    x = 857,313,579,192.72/785,423.60
  6. Step 6: Final answer
    x = 1,091,530.20

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1.5x scale

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.