Home / 870,320.37-1,299,524.30-779,778.57

Finding the Fourth Proportional to 870,320.37, 1,299,524.30 and 779,778.57

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Solution

The fourth proportional to 870,320.37, 1,299,524.30 and 779,778.57 is: 1,164,331.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,320.37 : 1,299,524.30 = 779,778.57 : x
  2. Step 2: Convert to fraction form
    870,320.37/1,299,524.30 = 779,778.57/x
  3. Step 3: Cross multiply
    870,320.37x = 1,299,524.30 × 779,778.57
  4. Step 4: Simplify right side
    870,320.37x = 1,013,341,200,334.25
  5. Step 5: Solve for x
    x = 1,013,341,200,334.25/870,320.37
  6. Step 6: Final answer
    x = 1,164,331.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.