Home / 784,751.40-1,177,127.10-385,648.20

Finding the Fourth Proportional to 784,751.40, 1,177,127.10 and 385,648.20

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Solution

The fourth proportional to 784,751.40, 1,177,127.10 and 385,648.20 is: 578,472.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,751.40 : 1,177,127.10 = 385,648.20 : x
  2. Step 2: Convert to fraction form
    784,751.40/1,177,127.10 = 385,648.20/x
  3. Step 3: Cross multiply
    784,751.40x = 1,177,127.10 × 385,648.20
  4. Step 4: Simplify right side
    784,751.40x = 453,956,947,286.22
  5. Step 5: Solve for x
    x = 453,956,947,286.22/784,751.40
  6. Step 6: Final answer
    x = 578,472.30

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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.