Home / 687,548.54-1,030,267.92-287,970.68

Finding the Fourth Proportional to 687,548.54, 1,030,267.92 and 287,970.68

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Solution

The fourth proportional to 687,548.54, 1,030,267.92 and 287,970.68 is: 431,514.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,548.54 : 1,030,267.92 = 287,970.68 : x
  2. Step 2: Convert to fraction form
    687,548.54/1,030,267.92 = 287,970.68/x
  3. Step 3: Cross multiply
    687,548.54x = 1,030,267.92 × 287,970.68
  4. Step 4: Simplify right side
    687,548.54x = 296,686,953,504.59
  5. Step 5: Solve for x
    x = 296,686,953,504.59/687,548.54
  6. Step 6: Final answer
    x = 431,514.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.