Home / 785,423.10-1,178,134.65-727,686.30

Finding the Fourth Proportional to 785,423.10, 1,178,134.65 and 727,686.30

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Solution

The fourth proportional to 785,423.10, 1,178,134.65 and 727,686.30 is: 1,091,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,423.10 : 1,178,134.65 = 727,686.30 : x
  2. Step 2: Convert to fraction form
    785,423.10/1,178,134.65 = 727,686.30/x
  3. Step 3: Cross multiply
    785,423.10x = 1,178,134.65 × 727,686.30
  4. Step 4: Simplify right side
    785,423.10x = 857,312,444,360.30
  5. Step 5: Solve for x
    x = 857,312,444,360.30/785,423.10
  6. Step 6: Final answer
    x = 1,091,529.45

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Double scale
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Similar ratio
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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.