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Finding the Fourth Proportional to 487,389.96, 671,102.82 and 426,620.52

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Solution

The fourth proportional to 487,389.96, 671,102.82 and 426,620.52 is: 587,427.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,389.96 : 671,102.82 = 426,620.52 : x
  2. Step 2: Convert to fraction form
    487,389.96/671,102.82 = 426,620.52/x
  3. Step 3: Cross multiply
    487,389.96x = 671,102.82 × 426,620.52
  4. Step 4: Simplify right side
    487,389.96x = 286,306,234,041.87
  5. Step 5: Solve for x
    x = 286,306,234,041.87/487,389.96
  6. Step 6: Final answer
    x = 587,427.43

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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.