Home / 817,235.40-1,225,853.10-397,331.40

Finding the Fourth Proportional to 817,235.40, 1,225,853.10 and 397,331.40

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Solution

The fourth proportional to 817,235.40, 1,225,853.10 and 397,331.40 is: 595,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,235.40 : 1,225,853.10 = 397,331.40 : x
  2. Step 2: Convert to fraction form
    817,235.40/1,225,853.10 = 397,331.40/x
  3. Step 3: Cross multiply
    817,235.40x = 1,225,853.10 × 397,331.40
  4. Step 4: Simplify right side
    817,235.40x = 487,069,928,417.34
  5. Step 5: Solve for x
    x = 487,069,928,417.34/817,235.40
  6. Step 6: Final answer
    x = 595,997.10

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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.