Home / 878,471.80-1,317,707.70-523,886.20

Finding the Fourth Proportional to 878,471.80, 1,317,707.70 and 523,886.20

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Solution

The fourth proportional to 878,471.80, 1,317,707.70 and 523,886.20 is: 785,829.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,471.80 : 1,317,707.70 = 523,886.20 : x
  2. Step 2: Convert to fraction form
    878,471.80/1,317,707.70 = 523,886.20/x
  3. Step 3: Cross multiply
    878,471.80x = 1,317,707.70 × 523,886.20
  4. Step 4: Simplify right side
    878,471.80x = 690,328,879,663.74
  5. Step 5: Solve for x
    x = 690,328,879,663.74/878,471.80
  6. Step 6: Final answer
    x = 785,829.30

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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.