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Finding the Fourth Proportional to 487,757.34, 735,291.86 and 455,243.94

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Solution

The fourth proportional to 487,757.34, 735,291.86 and 455,243.94 is: 686,278.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,757.34 : 735,291.86 = 455,243.94 : x
  2. Step 2: Convert to fraction form
    487,757.34/735,291.86 = 455,243.94/x
  3. Step 3: Cross multiply
    487,757.34x = 735,291.86 × 455,243.94
  4. Step 4: Simplify right side
    487,757.34x = 334,737,164,534.44
  5. Step 5: Solve for x
    x = 334,737,164,534.44/487,757.34
  6. Step 6: Final answer
    x = 686,278.07

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.