Home / 1,245,585.60-1,868,281.20-487,279.80

Finding the Fourth Proportional to 1,245,585.60, 1,868,281.20 and 487,279.80

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Solution

The fourth proportional to 1,245,585.60, 1,868,281.20 and 487,279.80 is: 730,881.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,585.60 : 1,868,281.20 = 487,279.80 : x
  2. Step 2: Convert to fraction form
    1,245,585.60/1,868,281.20 = 487,279.80/x
  3. Step 3: Cross multiply
    1,245,585.60x = 1,868,281.20 × 487,279.80
  4. Step 4: Simplify right side
    1,245,585.60x = 910,375,689,479.76
  5. Step 5: Solve for x
    x = 910,375,689,479.76/1,245,585.60
  6. Step 6: Final answer
    x = 730,881.67

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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.