Home / 840,730.87-1,261,061.02-391,297.15

Finding the Fourth Proportional to 840,730.87, 1,261,061.02 and 391,297.15

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Solution

The fourth proportional to 840,730.87, 1,261,061.02 and 391,297.15 is: 586,929.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,730.87 : 1,261,061.02 = 391,297.15 : x
  2. Step 2: Convert to fraction form
    840,730.87/1,261,061.02 = 391,297.15/x
  3. Step 3: Cross multiply
    840,730.87x = 1,261,061.02 × 391,297.15
  4. Step 4: Simplify right side
    840,730.87x = 493,449,574,840.30
  5. Step 5: Solve for x
    x = 493,449,574,840.30/840,730.87
  6. Step 6: Final answer
    x = 586,929.30

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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.