Home / 912,883.20-1,369,449.38-380,279.67

Finding the Fourth Proportional to 912,883.20, 1,369,449.38 and 380,279.67

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Solution

The fourth proportional to 912,883.20, 1,369,449.38 and 380,279.67 is: 570,471.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,883.20 : 1,369,449.38 = 380,279.67 : x
  2. Step 2: Convert to fraction form
    912,883.20/1,369,449.38 = 380,279.67/x
  3. Step 3: Cross multiply
    912,883.20x = 1,369,449.38 × 380,279.67
  4. Step 4: Simplify right side
    912,883.20x = 520,773,758,308.11
  5. Step 5: Solve for x
    x = 520,773,758,308.11/912,883.20
  6. Step 6: Final answer
    x = 570,471.40

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1.5x scale

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.