Home / 826,490.86-1,239,170.27-420,897.94

Finding the Fourth Proportional to 826,490.86, 1,239,170.27 and 420,897.94

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Solution

The fourth proportional to 826,490.86, 1,239,170.27 and 420,897.94 is: 631,058.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,490.86 : 1,239,170.27 = 420,897.94 : x
  2. Step 2: Convert to fraction form
    826,490.86/1,239,170.27 = 420,897.94/x
  3. Step 3: Cross multiply
    826,490.86x = 1,239,170.27 × 420,897.94
  4. Step 4: Simplify right side
    826,490.86x = 521,564,208,749.83
  5. Step 5: Solve for x
    x = 521,564,208,749.83/826,490.86
  6. Step 6: Final answer
    x = 631,058.65

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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.