Home / 913,612.60-1,370,418.90-440,345.80

Finding the Fourth Proportional to 913,612.60, 1,370,418.90 and 440,345.80

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Solution

The fourth proportional to 913,612.60, 1,370,418.90 and 440,345.80 is: 660,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,612.60 : 1,370,418.90 = 440,345.80 : x
  2. Step 2: Convert to fraction form
    913,612.60/1,370,418.90 = 440,345.80/x
  3. Step 3: Cross multiply
    913,612.60x = 1,370,418.90 × 440,345.80
  4. Step 4: Simplify right side
    913,612.60x = 603,458,206,855.62
  5. Step 5: Solve for x
    x = 603,458,206,855.62/913,612.60
  6. Step 6: Final answer
    x = 660,518.70

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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.