Home / 858,443.18-1,285,159.80-643,255.80

Finding the Fourth Proportional to 858,443.18, 1,285,159.80 and 643,255.80

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Solution

The fourth proportional to 858,443.18, 1,285,159.80 and 643,255.80 is: 963,006.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,443.18 : 1,285,159.80 = 643,255.80 : x
  2. Step 2: Convert to fraction form
    858,443.18/1,285,159.80 = 643,255.80/x
  3. Step 3: Cross multiply
    858,443.18x = 1,285,159.80 × 643,255.80
  4. Step 4: Simplify right side
    858,443.18x = 826,686,495,276.84
  5. Step 5: Solve for x
    x = 826,686,495,276.84/858,443.18
  6. Step 6: Final answer
    x = 963,006.65

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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.