Home / 807,864.60-1,211,796.90-538,426.20

Finding the Fourth Proportional to 807,864.60, 1,211,796.90 and 538,426.20

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Solution

The fourth proportional to 807,864.60, 1,211,796.90 and 538,426.20 is: 807,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,864.60 : 1,211,796.90 = 538,426.20 : x
  2. Step 2: Convert to fraction form
    807,864.60/1,211,796.90 = 538,426.20/x
  3. Step 3: Cross multiply
    807,864.60x = 1,211,796.90 × 538,426.20
  4. Step 4: Simplify right side
    807,864.60x = 652,463,200,038.78
  5. Step 5: Solve for x
    x = 652,463,200,038.78/807,864.60
  6. Step 6: Final answer
    x = 807,639.30

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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.