Home / 921,026.46-1,381,058.55-289,770.78

Finding the Fourth Proportional to 921,026.46, 1,381,058.55 and 289,770.78

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Solution

The fourth proportional to 921,026.46, 1,381,058.55 and 289,770.78 is: 434,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,026.46 : 1,381,058.55 = 289,770.78 : x
  2. Step 2: Convert to fraction form
    921,026.46/1,381,058.55 = 289,770.78/x
  3. Step 3: Cross multiply
    921,026.46x = 1,381,058.55 × 289,770.78
  4. Step 4: Simplify right side
    921,026.46x = 400,190,413,259.17
  5. Step 5: Solve for x
    x = 400,190,413,259.17/921,026.46
  6. Step 6: Final answer
    x = 434,504.80

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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.