Home / 858,140.80-1,289,284.80-766,902.40

Finding the Fourth Proportional to 858,140.80, 1,289,284.80 and 766,902.40

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Solution

The fourth proportional to 858,140.80, 1,289,284.80 and 766,902.40 is: 1,152,206.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,140.80 : 1,289,284.80 = 766,902.40 : x
  2. Step 2: Convert to fraction form
    858,140.80/1,289,284.80 = 766,902.40/x
  3. Step 3: Cross multiply
    858,140.80x = 1,289,284.80 × 766,902.40
  4. Step 4: Simplify right side
    858,140.80x = 988,755,607,403.52
  5. Step 5: Solve for x
    x = 988,755,607,403.52/858,140.80
  6. Step 6: Final answer
    x = 1,152,206.73

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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.