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Finding the Fourth Proportional to 456,013.76, 684,001.20 and 445,334.72

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Solution

The fourth proportional to 456,013.76, 684,001.20 and 445,334.72 is: 667,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,013.76 : 684,001.20 = 445,334.72 : x
  2. Step 2: Convert to fraction form
    456,013.76/684,001.20 = 445,334.72/x
  3. Step 3: Cross multiply
    456,013.76x = 684,001.20 × 445,334.72
  4. Step 4: Simplify right side
    456,013.76x = 304,609,482,881.66
  5. Step 5: Solve for x
    x = 304,609,482,881.66/456,013.76
  6. Step 6: Final answer
    x = 667,983.10

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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.