Home / 785,121.10-1,177,681.65-194,145.10

Finding the Fourth Proportional to 785,121.10, 1,177,681.65 and 194,145.10

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Solution

The fourth proportional to 785,121.10, 1,177,681.65 and 194,145.10 is: 291,217.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,121.10 : 1,177,681.65 = 194,145.10 : x
  2. Step 2: Convert to fraction form
    785,121.10/1,177,681.65 = 194,145.10/x
  3. Step 3: Cross multiply
    785,121.10x = 1,177,681.65 × 194,145.10
  4. Step 4: Simplify right side
    785,121.10x = 228,641,121,707.42
  5. Step 5: Solve for x
    x = 228,641,121,707.42/785,121.10
  6. Step 6: Final answer
    x = 291,217.65

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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.