Home / 1,278,380.24-1,918,303.04-520,081.76

Finding the Fourth Proportional to 1,278,380.24, 1,918,303.04 and 520,081.76

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Solution

The fourth proportional to 1,278,380.24, 1,918,303.04 and 520,081.76 is: 780,420.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,380.24 : 1,918,303.04 = 520,081.76 : x
  2. Step 2: Convert to fraction form
    1,278,380.24/1,918,303.04 = 520,081.76/x
  3. Step 3: Cross multiply
    1,278,380.24x = 1,918,303.04 × 520,081.76
  4. Step 4: Simplify right side
    1,278,380.24x = 997,674,421,256.55
  5. Step 5: Solve for x
    x = 997,674,421,256.55/1,278,380.24
  6. Step 6: Final answer
    x = 780,420.72

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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.