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Finding the Fourth Proportional to 551,470.57, 761,012.81 and 306,454.51

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Solution

The fourth proportional to 551,470.57, 761,012.81 and 306,454.51 is: 422,898.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,470.57 : 761,012.81 = 306,454.51 : x
  2. Step 2: Convert to fraction form
    551,470.57/761,012.81 = 306,454.51/x
  3. Step 3: Cross multiply
    551,470.57x = 761,012.81 × 306,454.51
  4. Step 4: Simplify right side
    551,470.57x = 233,215,806,655.88
  5. Step 5: Solve for x
    x = 233,215,806,655.88/551,470.57
  6. Step 6: Final answer
    x = 422,898.01

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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.