Home / 644,530.04-889,421.28-358,067.60

Finding the Fourth Proportional to 644,530.04, 889,421.28 and 358,067.60

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Solution

The fourth proportional to 644,530.04, 889,421.28 and 358,067.60 is: 494,116.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,530.04 : 889,421.28 = 358,067.60 : x
  2. Step 2: Convert to fraction form
    644,530.04/889,421.28 = 358,067.60/x
  3. Step 3: Cross multiply
    644,530.04x = 889,421.28 × 358,067.60
  4. Step 4: Simplify right side
    644,530.04x = 318,472,943,118.53
  5. Step 5: Solve for x
    x = 318,472,943,118.53/644,530.04
  6. Step 6: Final answer
    x = 494,116.52

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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.