Home / 858,780.98-1,288,373.76-259,747.10

Finding the Fourth Proportional to 858,780.98, 1,288,373.76 and 259,747.10

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Solution

The fourth proportional to 858,780.98, 1,288,373.76 and 259,747.10 is: 389,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,780.98 : 1,288,373.76 = 259,747.10 : x
  2. Step 2: Convert to fraction form
    858,780.98/1,288,373.76 = 259,747.10/x
  3. Step 3: Cross multiply
    858,780.98x = 1,288,373.76 × 259,747.10
  4. Step 4: Simplify right side
    858,780.98x = 334,651,341,434.23
  5. Step 5: Solve for x
    x = 334,651,341,434.23/858,780.98
  6. Step 6: Final answer
    x = 389,681.83

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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.