Home / 813,698.10-1,220,741.55-392,627.70

Finding the Fourth Proportional to 813,698.10, 1,220,741.55 and 392,627.70

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Solution

The fourth proportional to 813,698.10, 1,220,741.55 and 392,627.70 is: 589,035.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,698.10 : 1,220,741.55 = 392,627.70 : x
  2. Step 2: Convert to fraction form
    813,698.10/1,220,741.55 = 392,627.70/x
  3. Step 3: Cross multiply
    813,698.10x = 1,220,741.55 × 392,627.70
  4. Step 4: Simplify right side
    813,698.10x = 479,296,947,070.94
  5. Step 5: Solve for x
    x = 479,296,947,070.94/813,698.10
  6. Step 6: Final answer
    x = 589,035.35

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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.