Home / 519,723.80-779,585.70-145,810.20

Finding the Fourth Proportional to 519,723.80, 779,585.70 and 145,810.20

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Solution

The fourth proportional to 519,723.80, 779,585.70 and 145,810.20 is: 218,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,723.80 : 779,585.70 = 145,810.20 : x
  2. Step 2: Convert to fraction form
    519,723.80/779,585.70 = 145,810.20/x
  3. Step 3: Cross multiply
    519,723.80x = 779,585.70 × 145,810.20
  4. Step 4: Simplify right side
    519,723.80x = 113,671,546,834.14
  5. Step 5: Solve for x
    x = 113,671,546,834.14/519,723.80
  6. Step 6: Final answer
    x = 218,715.30

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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.