Home / 912,699.11-1,366,952.45-455,888.20

Finding the Fourth Proportional to 912,699.11, 1,366,952.45 and 455,888.20

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Solution

The fourth proportional to 912,699.11, 1,366,952.45 and 455,888.20 is: 682,785.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,699.11 : 1,366,952.45 = 455,888.20 : x
  2. Step 2: Convert to fraction form
    912,699.11/1,366,952.45 = 455,888.20/x
  3. Step 3: Cross multiply
    912,699.11x = 1,366,952.45 × 455,888.20
  4. Step 4: Simplify right side
    912,699.11x = 623,177,491,916.09
  5. Step 5: Solve for x
    x = 623,177,491,916.09/912,699.11
  6. Step 6: Final answer
    x = 682,785.25

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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.