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Finding the Fourth Proportional to 587,244.45, 810,358.95 and 345,480.30

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Solution

The fourth proportional to 587,244.45, 810,358.95 and 345,480.30 is: 476,740.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,244.45 : 810,358.95 = 345,480.30 : x
  2. Step 2: Convert to fraction form
    587,244.45/810,358.95 = 345,480.30/x
  3. Step 3: Cross multiply
    587,244.45x = 810,358.95 × 345,480.30
  4. Step 4: Simplify right side
    587,244.45x = 279,963,053,153.69
  5. Step 5: Solve for x
    x = 279,963,053,153.69/587,244.45
  6. Step 6: Final answer
    x = 476,740.23

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.