Home / 858,444.18-1,285,161.30-643,256.80

Finding the Fourth Proportional to 858,444.18, 1,285,161.30 and 643,256.80

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Solution

The fourth proportional to 858,444.18, 1,285,161.30 and 643,256.80 is: 963,008.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,444.18 : 1,285,161.30 = 643,256.80 : x
  2. Step 2: Convert to fraction form
    858,444.18/1,285,161.30 = 643,256.80/x
  3. Step 3: Cross multiply
    858,444.18x = 1,285,161.30 × 643,256.80
  4. Step 4: Simplify right side
    858,444.18x = 826,688,745,321.84
  5. Step 5: Solve for x
    x = 826,688,745,321.84/858,444.18
  6. Step 6: Final answer
    x = 963,008.15

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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.