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Finding the Fourth Proportional to 483,421.32, 667,201.32 and 402,721.02

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Solution

The fourth proportional to 483,421.32, 667,201.32 and 402,721.02 is: 555,821.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,421.32 : 667,201.32 = 402,721.02 : x
  2. Step 2: Convert to fraction form
    483,421.32/667,201.32 = 402,721.02/x
  3. Step 3: Cross multiply
    483,421.32x = 667,201.32 × 402,721.02
  4. Step 4: Simplify right side
    483,421.32x = 268,695,996,135.75
  5. Step 5: Solve for x
    x = 268,695,996,135.75/483,421.32
  6. Step 6: Final answer
    x = 555,821.57

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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.