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Finding the Fourth Proportional to 539,870.54, 745,021.33 and 313,530.62

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Solution

The fourth proportional to 539,870.54, 745,021.33 and 313,530.62 is: 432,672.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,870.54 : 745,021.33 = 313,530.62 : x
  2. Step 2: Convert to fraction form
    539,870.54/745,021.33 = 313,530.62/x
  3. Step 3: Cross multiply
    539,870.54x = 745,021.33 × 313,530.62
  4. Step 4: Simplify right side
    539,870.54x = 233,586,999,508.13
  5. Step 5: Solve for x
    x = 233,586,999,508.13/539,870.54
  6. Step 6: Final answer
    x = 432,672.25

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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.