Home / 677,055.40-934,435.92-390,519.52

Finding the Fourth Proportional to 677,055.40, 934,435.92 and 390,519.52

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Solution

The fourth proportional to 677,055.40, 934,435.92 and 390,519.52 is: 538,974.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,055.40 : 934,435.92 = 390,519.52 : x
  2. Step 2: Convert to fraction form
    677,055.40/934,435.92 = 390,519.52/x
  3. Step 3: Cross multiply
    677,055.40x = 934,435.92 × 390,519.52
  4. Step 4: Simplify right side
    677,055.40x = 364,915,466,949.16
  5. Step 5: Solve for x
    x = 364,915,466,949.16/677,055.40
  6. Step 6: Final answer
    x = 538,974.31

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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.