Home / 828,140.40-1,142,807.16-465,579.48

Finding the Fourth Proportional to 828,140.40, 1,142,807.16 and 465,579.48

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Solution

The fourth proportional to 828,140.40, 1,142,807.16 and 465,579.48 is: 642,484.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,140.40 : 1,142,807.16 = 465,579.48 : x
  2. Step 2: Convert to fraction form
    828,140.40/1,142,807.16 = 465,579.48/x
  3. Step 3: Cross multiply
    828,140.40x = 1,142,807.16 × 465,579.48
  4. Step 4: Simplify right side
    828,140.40x = 532,067,563,293.08
  5. Step 5: Solve for x
    x = 532,067,563,293.08/828,140.40
  6. Step 6: Final answer
    x = 642,484.73

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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.