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Finding the Fourth Proportional to 539,443.78, 744,428.75 and 297,726.35

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Solution

The fourth proportional to 539,443.78, 744,428.75 and 297,726.35 is: 410,860.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,443.78 : 744,428.75 = 297,726.35 : x
  2. Step 2: Convert to fraction form
    539,443.78/744,428.75 = 297,726.35/x
  3. Step 3: Cross multiply
    539,443.78x = 744,428.75 × 297,726.35
  4. Step 4: Simplify right side
    539,443.78x = 221,636,053,269.87
  5. Step 5: Solve for x
    x = 221,636,053,269.87/539,443.78
  6. Step 6: Final answer
    x = 410,860.34

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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.