Home / 695,987.02-960,539.07-390,113.20

Finding the Fourth Proportional to 695,987.02, 960,539.07 and 390,113.20

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Solution

The fourth proportional to 695,987.02, 960,539.07 and 390,113.20 is: 538,399.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,987.02 : 960,539.07 = 390,113.20 : x
  2. Step 2: Convert to fraction form
    695,987.02/960,539.07 = 390,113.20/x
  3. Step 3: Cross multiply
    695,987.02x = 960,539.07 × 390,113.20
  4. Step 4: Simplify right side
    695,987.02x = 374,718,970,322.72
  5. Step 5: Solve for x
    x = 374,718,970,322.72/695,987.02
  6. Step 6: Final answer
    x = 538,399.37

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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.