Home / 840,731.49-1,261,061.96-391,297.77

Finding the Fourth Proportional to 840,731.49, 1,261,061.96 and 391,297.77

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Solution

The fourth proportional to 840,731.49, 1,261,061.96 and 391,297.77 is: 586,930.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,731.49 : 1,261,061.96 = 391,297.77 : x
  2. Step 2: Convert to fraction form
    840,731.49/1,261,061.96 = 391,297.77/x
  3. Step 3: Cross multiply
    840,731.49x = 1,261,061.96 × 391,297.77
  4. Step 4: Simplify right side
    840,731.49x = 493,450,730,823.34
  5. Step 5: Solve for x
    x = 493,450,730,823.34/840,731.49
  6. Step 6: Final answer
    x = 586,930.23

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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.