Home / 913,410.60-1,370,115.90-440,143.80

Finding the Fourth Proportional to 913,410.60, 1,370,115.90 and 440,143.80

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Solution

The fourth proportional to 913,410.60, 1,370,115.90 and 440,143.80 is: 660,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,410.60 : 1,370,115.90 = 440,143.80 : x
  2. Step 2: Convert to fraction form
    913,410.60/1,370,115.90 = 440,143.80/x
  3. Step 3: Cross multiply
    913,410.60x = 1,370,115.90 × 440,143.80
  4. Step 4: Simplify right side
    913,410.60x = 603,048,018,666.42
  5. Step 5: Solve for x
    x = 603,048,018,666.42/913,410.60
  6. Step 6: Final answer
    x = 660,215.70

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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.