Home / 830,757.12-1,246,223.16-409,628.40

Finding the Fourth Proportional to 830,757.12, 1,246,223.16 and 409,628.40

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Solution

The fourth proportional to 830,757.12, 1,246,223.16 and 409,628.40 is: 614,485.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,757.12 : 1,246,223.16 = 409,628.40 : x
  2. Step 2: Convert to fraction form
    830,757.12/1,246,223.16 = 409,628.40/x
  3. Step 3: Cross multiply
    830,757.12x = 1,246,223.16 × 409,628.40
  4. Step 4: Simplify right side
    830,757.12x = 510,488,399,073.74
  5. Step 5: Solve for x
    x = 510,488,399,073.74/830,757.12
  6. Step 6: Final answer
    x = 614,485.73

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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.