Home / 390,986.13-584,053.28-283,516.95

Finding the Fourth Proportional to 390,986.13, 584,053.28 and 283,516.95

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Solution

The fourth proportional to 390,986.13, 584,053.28 and 283,516.95 is: 423,516.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,986.13 : 584,053.28 = 283,516.95 : x
  2. Step 2: Convert to fraction form
    390,986.13/584,053.28 = 283,516.95/x
  3. Step 3: Cross multiply
    390,986.13x = 584,053.28 × 283,516.95
  4. Step 4: Simplify right side
    390,986.13x = 165,589,003,165.51
  5. Step 5: Solve for x
    x = 165,589,003,165.51/390,986.13
  6. Step 6: Final answer
    x = 423,516.31

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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.