Home / 648,002.80-972,004.20-316,226.80

Finding the Fourth Proportional to 648,002.80, 972,004.20 and 316,226.80

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Solution

The fourth proportional to 648,002.80, 972,004.20 and 316,226.80 is: 474,340.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,002.80 : 972,004.20 = 316,226.80 : x
  2. Step 2: Convert to fraction form
    648,002.80/972,004.20 = 316,226.80/x
  3. Step 3: Cross multiply
    648,002.80x = 972,004.20 × 316,226.80
  4. Step 4: Simplify right side
    648,002.80x = 307,373,777,752.56
  5. Step 5: Solve for x
    x = 307,373,777,752.56/648,002.80
  6. Step 6: Final answer
    x = 474,340.20

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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.