Home / 905,459.10-1,356,633.45-431,123.10

Finding the Fourth Proportional to 905,459.10, 1,356,633.45 and 431,123.10

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Solution

The fourth proportional to 905,459.10, 1,356,633.45 and 431,123.10 is: 645,944.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,459.10 : 1,356,633.45 = 431,123.10 : x
  2. Step 2: Convert to fraction form
    905,459.10/1,356,633.45 = 431,123.10/x
  3. Step 3: Cross multiply
    905,459.10x = 1,356,633.45 × 431,123.10
  4. Step 4: Simplify right side
    905,459.10x = 584,876,018,527.70
  5. Step 5: Solve for x
    x = 584,876,018,527.70/905,459.10
  6. Step 6: Final answer
    x = 645,944.16

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Half scale
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Double scale
Find fourth proportional to 905,460.10, 1,356,634.95 and 431,124.10
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.