Home / 857,285.10-1,285,927.65-432,132.30

Finding the Fourth Proportional to 857,285.10, 1,285,927.65 and 432,132.30

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Solution

The fourth proportional to 857,285.10, 1,285,927.65 and 432,132.30 is: 648,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,285.10 : 1,285,927.65 = 432,132.30 : x
  2. Step 2: Convert to fraction form
    857,285.10/1,285,927.65 = 432,132.30/x
  3. Step 3: Cross multiply
    857,285.10x = 1,285,927.65 × 432,132.30
  4. Step 4: Simplify right side
    857,285.10x = 555,690,873,028.10
  5. Step 5: Solve for x
    x = 555,690,873,028.10/857,285.10
  6. Step 6: Final answer
    x = 648,198.45

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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.