Home / 878,638.56-1,212,508.08-496,651.92

Finding the Fourth Proportional to 878,638.56, 1,212,508.08 and 496,651.92

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Solution

The fourth proportional to 878,638.56, 1,212,508.08 and 496,651.92 is: 685,372.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,638.56 : 1,212,508.08 = 496,651.92 : x
  2. Step 2: Convert to fraction form
    878,638.56/1,212,508.08 = 496,651.92/x
  3. Step 3: Cross multiply
    878,638.56x = 1,212,508.08 × 496,651.92
  4. Step 4: Simplify right side
    878,638.56x = 602,194,465,947.51
  5. Step 5: Solve for x
    x = 602,194,465,947.51/878,638.56
  6. Step 6: Final answer
    x = 685,372.23

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1.5x scale

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.