Home / 990,856.80-1,367,359.92-538,138.08

Finding the Fourth Proportional to 990,856.80, 1,367,359.92 and 538,138.08

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Solution

The fourth proportional to 990,856.80, 1,367,359.92 and 538,138.08 is: 742,618.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,856.80 : 1,367,359.92 = 538,138.08 : x
  2. Step 2: Convert to fraction form
    990,856.80/1,367,359.92 = 538,138.08/x
  3. Step 3: Cross multiply
    990,856.80x = 1,367,359.92 × 538,138.08
  4. Step 4: Simplify right side
    990,856.80x = 735,828,442,017.75
  5. Step 5: Solve for x
    x = 735,828,442,017.75/990,856.80
  6. Step 6: Final answer
    x = 742,618.35

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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.