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Finding the Fourth Proportional to 639,703.34, 959,887.10 and 260,901.98

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Solution

The fourth proportional to 639,703.34, 959,887.10 and 260,901.98 is: 391,488.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,703.34 : 959,887.10 = 260,901.98 : x
  2. Step 2: Convert to fraction form
    639,703.34/959,887.10 = 260,901.98/x
  3. Step 3: Cross multiply
    639,703.34x = 959,887.10 × 260,901.98
  4. Step 4: Simplify right side
    639,703.34x = 250,436,444,966.46
  5. Step 5: Solve for x
    x = 250,436,444,966.46/639,703.34
  6. Step 6: Final answer
    x = 391,488.41

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1.5x scale

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.