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Finding the Fourth Proportional to 424,368.32, 636,560.37 and 339,735.47

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Solution

The fourth proportional to 424,368.32, 636,560.37 and 339,735.47 is: 509,609.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,368.32 : 636,560.37 = 339,735.47 : x
  2. Step 2: Convert to fraction form
    424,368.32/636,560.37 = 339,735.47/x
  3. Step 3: Cross multiply
    424,368.32x = 636,560.37 × 339,735.47
  4. Step 4: Simplify right side
    424,368.32x = 216,262,133,302.52
  5. Step 5: Solve for x
    x = 216,262,133,302.52/424,368.32
  6. Step 6: Final answer
    x = 509,609.52

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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.