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Finding the Fourth Proportional to 424,720.59, 636,333.53 and 399,435.63

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Solution

The fourth proportional to 424,720.59, 636,333.53 and 399,435.63 is: 598,450.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,720.59 : 636,333.53 = 399,435.63 : x
  2. Step 2: Convert to fraction form
    424,720.59/636,333.53 = 399,435.63/x
  3. Step 3: Cross multiply
    424,720.59x = 636,333.53 × 399,435.63
  4. Step 4: Simplify right side
    424,720.59x = 254,174,284,445.67
  5. Step 5: Solve for x
    x = 254,174,284,445.67/424,720.59
  6. Step 6: Final answer
    x = 598,450.58

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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.