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Finding the Fourth Proportional to 539,555.72, 744,582.78 and 297,838.45

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Solution

The fourth proportional to 539,555.72, 744,582.78 and 297,838.45 is: 411,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,555.72 : 744,582.78 = 297,838.45 : x
  2. Step 2: Convert to fraction form
    539,555.72/744,582.78 = 297,838.45/x
  3. Step 3: Cross multiply
    539,555.72x = 744,582.78 × 297,838.45
  4. Step 4: Simplify right side
    539,555.72x = 221,765,382,022.62
  5. Step 5: Solve for x
    x = 221,765,382,022.62/539,555.72
  6. Step 6: Final answer
    x = 411,014.80

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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.