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Finding the Fourth Proportional to 539,448.40, 744,435.10 and 297,730.96

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Solution

The fourth proportional to 539,448.40, 744,435.10 and 297,730.96 is: 410,866.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,448.40 : 744,435.10 = 297,730.96 : x
  2. Step 2: Convert to fraction form
    539,448.40/744,435.10 = 297,730.96/x
  3. Step 3: Cross multiply
    539,448.40x = 744,435.10 × 297,730.96
  4. Step 4: Simplify right side
    539,448.40x = 221,641,376,980.70
  5. Step 5: Solve for x
    x = 221,641,376,980.70/539,448.40
  6. Step 6: Final answer
    x = 410,866.69

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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.