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Finding the Fourth Proportional to 463,521.52, 639,668.76 and 302,479.60

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Solution

The fourth proportional to 463,521.52, 639,668.76 and 302,479.60 is: 417,427.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,521.52 : 639,668.76 = 302,479.60 : x
  2. Step 2: Convert to fraction form
    463,521.52/639,668.76 = 302,479.60/x
  3. Step 3: Cross multiply
    463,521.52x = 639,668.76 × 302,479.60
  4. Step 4: Simplify right side
    463,521.52x = 193,486,750,657.30
  5. Step 5: Solve for x
    x = 193,486,750,657.30/463,521.52
  6. Step 6: Final answer
    x = 417,427.76

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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.