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Finding the Fourth Proportional to 661,376.90, 912,696.30 and 367,023.66

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Solution

The fourth proportional to 661,376.90, 912,696.30 and 367,023.66 is: 506,490.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,376.90 : 912,696.30 = 367,023.66 : x
  2. Step 2: Convert to fraction form
    661,376.90/912,696.30 = 367,023.66/x
  3. Step 3: Cross multiply
    661,376.90x = 912,696.30 × 367,023.66
  4. Step 4: Simplify right side
    661,376.90x = 334,981,136,494.46
  5. Step 5: Solve for x
    x = 334,981,136,494.46/661,376.90
  6. Step 6: Final answer
    x = 506,490.53

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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.