Home / 1,278,378.24-1,918,300.04-520,079.76

Finding the Fourth Proportional to 1,278,378.24, 1,918,300.04 and 520,079.76

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Solution

The fourth proportional to 1,278,378.24, 1,918,300.04 and 520,079.76 is: 780,417.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,378.24 : 1,918,300.04 = 520,079.76 : x
  2. Step 2: Convert to fraction form
    1,278,378.24/1,918,300.04 = 520,079.76/x
  3. Step 3: Cross multiply
    1,278,378.24x = 1,918,300.04 × 520,079.76
  4. Step 4: Simplify right side
    1,278,378.24x = 997,669,024,411.19
  5. Step 5: Solve for x
    x = 997,669,024,411.19/1,278,378.24
  6. Step 6: Final answer
    x = 780,417.71

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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.