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Finding the Fourth Proportional to 827,240.60, 1,240,860.90 and 353,973.80

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Solution

The fourth proportional to 827,240.60, 1,240,860.90 and 353,973.80 is: 530,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,240.60 : 1,240,860.90 = 353,973.80 : x
  2. Step 2: Convert to fraction form
    827,240.60/1,240,860.90 = 353,973.80/x
  3. Step 3: Cross multiply
    827,240.60x = 1,240,860.90 × 353,973.80
  4. Step 4: Simplify right side
    827,240.60x = 439,232,248,044.42
  5. Step 5: Solve for x
    x = 439,232,248,044.42/827,240.60
  6. Step 6: Final answer
    x = 530,960.70

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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.