Home / 900,017.40-1,242,025.14-492,121.08

Finding the Fourth Proportional to 900,017.40, 1,242,025.14 and 492,121.08

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Solution

The fourth proportional to 900,017.40, 1,242,025.14 and 492,121.08 is: 679,127.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,017.40 : 1,242,025.14 = 492,121.08 : x
  2. Step 2: Convert to fraction form
    900,017.40/1,242,025.14 = 492,121.08/x
  3. Step 3: Cross multiply
    900,017.40x = 1,242,025.14 × 492,121.08
  4. Step 4: Simplify right side
    900,017.40x = 611,226,753,283.95
  5. Step 5: Solve for x
    x = 611,226,753,283.95/900,017.40
  6. Step 6: Final answer
    x = 679,127.71

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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.