Home / 828,088.28-1,241,246.55-428,326.58

Finding the Fourth Proportional to 828,088.28, 1,241,246.55 and 428,326.58

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Solution

The fourth proportional to 828,088.28, 1,241,246.55 and 428,326.58 is: 642,031.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,088.28 : 1,241,246.55 = 428,326.58 : x
  2. Step 2: Convert to fraction form
    828,088.28/1,241,246.55 = 428,326.58/x
  3. Step 3: Cross multiply
    828,088.28x = 1,241,246.55 × 428,326.58
  4. Step 4: Simplify right side
    828,088.28x = 531,658,889,698.30
  5. Step 5: Solve for x
    x = 531,658,889,698.30/828,088.28
  6. Step 6: Final answer
    x = 642,031.66

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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.