Home / 498,536.32-686,991.36-355,043.20

Finding the Fourth Proportional to 498,536.32, 686,991.36 and 355,043.20

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Solution

The fourth proportional to 498,536.32, 686,991.36 and 355,043.20 is: 489,255.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,536.32 : 686,991.36 = 355,043.20 : x
  2. Step 2: Convert to fraction form
    498,536.32/686,991.36 = 355,043.20/x
  3. Step 3: Cross multiply
    498,536.32x = 686,991.36 × 355,043.20
  4. Step 4: Simplify right side
    498,536.32x = 243,911,610,826.75
  5. Step 5: Solve for x
    x = 243,911,610,826.75/498,536.32
  6. Step 6: Final answer
    x = 489,255.45

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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.