Home / 516,007.20-774,010.80-397,909.20

Finding the Fourth Proportional to 516,007.20, 774,010.80 and 397,909.20

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Solution

The fourth proportional to 516,007.20, 774,010.80 and 397,909.20 is: 596,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,007.20 : 774,010.80 = 397,909.20 : x
  2. Step 2: Convert to fraction form
    516,007.20/774,010.80 = 397,909.20/x
  3. Step 3: Cross multiply
    516,007.20x = 774,010.80 × 397,909.20
  4. Step 4: Simplify right side
    516,007.20x = 307,986,018,219.36
  5. Step 5: Solve for x
    x = 307,986,018,219.36/516,007.20
  6. Step 6: Final answer
    x = 596,863.80

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Half scale
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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.