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Finding the Fourth Proportional to 480,368.52, 662,467.86 and 289,049.76

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Solution

The fourth proportional to 480,368.52, 662,467.86 and 289,049.76 is: 398,623.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,368.52 : 662,467.86 = 289,049.76 : x
  2. Step 2: Convert to fraction form
    480,368.52/662,467.86 = 289,049.76/x
  3. Step 3: Cross multiply
    480,368.52x = 662,467.86 × 289,049.76
  4. Step 4: Simplify right side
    480,368.52x = 191,486,175,940.71
  5. Step 5: Solve for x
    x = 191,486,175,940.71/480,368.52
  6. Step 6: Final answer
    x = 398,623.49

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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.