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Finding the Fourth Proportional to 675,395.99, 932,039.21 and 369,478.43

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Solution

The fourth proportional to 675,395.99, 932,039.21 and 369,478.43 is: 509,876.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,395.99 : 932,039.21 = 369,478.43 : x
  2. Step 2: Convert to fraction form
    675,395.99/932,039.21 = 369,478.43/x
  3. Step 3: Cross multiply
    675,395.99x = 932,039.21 × 369,478.43
  4. Step 4: Simplify right side
    675,395.99x = 344,368,381,689.57
  5. Step 5: Solve for x
    x = 344,368,381,689.57/675,395.99
  6. Step 6: Final answer
    x = 509,876.26

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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.