Home / 825,719.20-1,239,730.80-528,042.40

Finding the Fourth Proportional to 825,719.20, 1,239,730.80 and 528,042.40

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Solution

The fourth proportional to 825,719.20, 1,239,730.80 and 528,042.40 is: 792,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,719.20 : 1,239,730.80 = 528,042.40 : x
  2. Step 2: Convert to fraction form
    825,719.20/1,239,730.80 = 528,042.40/x
  3. Step 3: Cross multiply
    825,719.20x = 1,239,730.80 × 528,042.40
  4. Step 4: Simplify right side
    825,719.20x = 654,630,426,985.92
  5. Step 5: Solve for x
    x = 654,630,426,985.92/825,719.20
  6. Step 6: Final answer
    x = 792,800.30

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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.