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Finding the Fourth Proportional to 675,708.71, 932,478.09 and 369,785.21

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Solution

The fourth proportional to 675,708.71, 932,478.09 and 369,785.21 is: 510,303.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,708.71 : 932,478.09 = 369,785.21 : x
  2. Step 2: Convert to fraction form
    675,708.71/932,478.09 = 369,785.21/x
  3. Step 3: Cross multiply
    675,708.71x = 932,478.09 × 369,785.21
  4. Step 4: Simplify right side
    675,708.71x = 344,816,606,331.05
  5. Step 5: Solve for x
    x = 344,816,606,331.05/675,708.71
  6. Step 6: Final answer
    x = 510,303.63

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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.