Home / 403,479.12-605,316-122,979.36

Finding the Fourth Proportional to 403,479.12, 605,316 and 122,979.36

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Solution

The fourth proportional to 403,479.12, 605,316 and 122,979.36 is: 184,498.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,479.12 : 605,316 = 122,979.36 : x
  2. Step 2: Convert to fraction form
    403,479.12/605,316 = 122,979.36/x
  3. Step 3: Cross multiply
    403,479.12x = 605,316 × 122,979.36
  4. Step 4: Simplify right side
    403,479.12x = 74,441,374,277.76
  5. Step 5: Solve for x
    x = 74,441,374,277.76/403,479.12
  6. Step 6: Final answer
    x = 184,498.70

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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.