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Finding the Fourth Proportional to 472,972.80, 663,820.80 and 472,972.80

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Solution

The fourth proportional to 472,972.80, 663,820.80 and 472,972.80 is: 663,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,972.80 : 663,820.80 = 472,972.80 : x
  2. Step 2: Convert to fraction form
    472,972.80/663,820.80 = 472,972.80/x
  3. Step 3: Cross multiply
    472,972.80x = 663,820.80 × 472,972.80
  4. Step 4: Simplify right side
    472,972.80x = 313,969,182,474.24
  5. Step 5: Solve for x
    x = 313,969,182,474.24/472,972.80
  6. Step 6: Final answer
    x = 663,820.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.