Home / 820,312.77-1,131,862.60-471,385.71

Finding the Fourth Proportional to 820,312.77, 1,131,862.60 and 471,385.71

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Solution

The fourth proportional to 820,312.77, 1,131,862.60 and 471,385.71 is: 650,415.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,312.77 : 1,131,862.60 = 471,385.71 : x
  2. Step 2: Convert to fraction form
    820,312.77/1,131,862.60 = 471,385.71/x
  3. Step 3: Cross multiply
    820,312.77x = 1,131,862.60 × 471,385.71
  4. Step 4: Simplify right side
    820,312.77x = 533,543,855,323.45
  5. Step 5: Solve for x
    x = 533,543,855,323.45/820,312.77
  6. Step 6: Final answer
    x = 650,415.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.