Home / 390,987.13-584,054.77-283,517.95

Finding the Fourth Proportional to 390,987.13, 584,054.77 and 283,517.95

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Solution

The fourth proportional to 390,987.13, 584,054.77 and 283,517.95 is: 423,517.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,987.13 : 584,054.77 = 283,517.95 : x
  2. Step 2: Convert to fraction form
    390,987.13/584,054.77 = 283,517.95/x
  3. Step 3: Cross multiply
    390,987.13x = 584,054.77 × 283,517.95
  4. Step 4: Simplify right side
    390,987.13x = 165,590,011,078.12
  5. Step 5: Solve for x
    x = 165,590,011,078.12/390,987.13
  6. Step 6: Final answer
    x = 423,517.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.