Home / 858,442.18-1,285,158.30-643,254.80

Finding the Fourth Proportional to 858,442.18, 1,285,158.30 and 643,254.80

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Solution

The fourth proportional to 858,442.18, 1,285,158.30 and 643,254.80 is: 963,005.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,442.18 : 1,285,158.30 = 643,254.80 : x
  2. Step 2: Convert to fraction form
    858,442.18/1,285,158.30 = 643,254.80/x
  3. Step 3: Cross multiply
    858,442.18x = 1,285,158.30 × 643,254.80
  4. Step 4: Simplify right side
    858,442.18x = 826,684,245,234.84
  5. Step 5: Solve for x
    x = 826,684,245,234.84/858,442.18
  6. Step 6: Final answer
    x = 963,005.16

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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.