Home / 913,117.20-1,369,675.80-440,725.20

Finding the Fourth Proportional to 913,117.20, 1,369,675.80 and 440,725.20

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Solution

The fourth proportional to 913,117.20, 1,369,675.80 and 440,725.20 is: 661,087.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,117.20 : 1,369,675.80 = 440,725.20 : x
  2. Step 2: Convert to fraction form
    913,117.20/1,369,675.80 = 440,725.20/x
  3. Step 3: Cross multiply
    913,117.20x = 1,369,675.80 × 440,725.20
  4. Step 4: Simplify right side
    913,117.20x = 603,650,640,890.16
  5. Step 5: Solve for x
    x = 603,650,640,890.16/913,117.20
  6. Step 6: Final answer
    x = 661,087.80

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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.