Home / 1,298,543.60-1,947,815.40-820,246.70

Finding the Fourth Proportional to 1,298,543.60, 1,947,815.40 and 820,246.70

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Solution

The fourth proportional to 1,298,543.60, 1,947,815.40 and 820,246.70 is: 1,230,370.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,543.60 : 1,947,815.40 = 820,246.70 : x
  2. Step 2: Convert to fraction form
    1,298,543.60/1,947,815.40 = 820,246.70/x
  3. Step 3: Cross multiply
    1,298,543.60x = 1,947,815.40 × 820,246.70
  4. Step 4: Simplify right side
    1,298,543.60x = 1,597,689,154,059.18
  5. Step 5: Solve for x
    x = 1,597,689,154,059.18/1,298,543.60
  6. Step 6: Final answer
    x = 1,230,370.05

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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.