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Finding the Fourth Proportional to 424,718.02, 636,329.69 and 399,433.06

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Solution

The fourth proportional to 424,718.02, 636,329.69 and 399,433.06 is: 598,446.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,718.02 : 636,329.69 = 399,433.06 : x
  2. Step 2: Convert to fraction form
    424,718.02/636,329.69 = 399,433.06/x
  3. Step 3: Cross multiply
    424,718.02x = 636,329.69 × 399,433.06
  4. Step 4: Simplify right side
    424,718.02x = 254,171,111,657.56
  5. Step 5: Solve for x
    x = 254,171,111,657.56/424,718.02
  6. Step 6: Final answer
    x = 598,446.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.