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Finding the Fourth Proportional to 424,948.63, 586,955.71 and 308,476.20

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Solution

The fourth proportional to 424,948.63, 586,955.71 and 308,476.20 is: 426,079.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,948.63 : 586,955.71 = 308,476.20 : x
  2. Step 2: Convert to fraction form
    424,948.63/586,955.71 = 308,476.20/x
  3. Step 3: Cross multiply
    424,948.63x = 586,955.71 × 308,476.20
  4. Step 4: Simplify right side
    424,948.63x = 181,061,866,989.10
  5. Step 5: Solve for x
    x = 181,061,866,989.10/424,948.63
  6. Step 6: Final answer
    x = 426,079.43

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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.