Home / 890,308.31-1,228,629.75-482,410.05

Finding the Fourth Proportional to 890,308.31, 1,228,629.75 and 482,410.05

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Solution

The fourth proportional to 890,308.31, 1,228,629.75 and 482,410.05 is: 665,728.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,308.31 : 1,228,629.75 = 482,410.05 : x
  2. Step 2: Convert to fraction form
    890,308.31/1,228,629.75 = 482,410.05/x
  3. Step 3: Cross multiply
    890,308.31x = 1,228,629.75 × 482,410.05
  4. Step 4: Simplify right side
    890,308.31x = 592,703,337,729.83
  5. Step 5: Solve for x
    x = 592,703,337,729.83/890,308.31
  6. Step 6: Final answer
    x = 665,728.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.