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Finding the Fourth Proportional to 487,462.15, 731,312.88 and 343,649.01

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Solution

The fourth proportional to 487,462.15, 731,312.88 and 343,649.01 is: 515,557.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,462.15 : 731,312.88 = 343,649.01 : x
  2. Step 2: Convert to fraction form
    487,462.15/731,312.88 = 343,649.01/x
  3. Step 3: Cross multiply
    487,462.15x = 731,312.88 × 343,649.01
  4. Step 4: Simplify right side
    487,462.15x = 251,314,943,462.05
  5. Step 5: Solve for x
    x = 251,314,943,462.05/487,462.15
  6. Step 6: Final answer
    x = 515,557.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.