Home / 645,468.22-967,316.58-408,386.48

Finding the Fourth Proportional to 645,468.22, 967,316.58 and 408,386.48

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Solution

The fourth proportional to 645,468.22, 967,316.58 and 408,386.48 is: 612,019.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,468.22 : 967,316.58 = 408,386.48 : x
  2. Step 2: Convert to fraction form
    645,468.22/967,316.58 = 408,386.48/x
  3. Step 3: Cross multiply
    645,468.22x = 967,316.58 × 408,386.48
  4. Step 4: Simplify right side
    645,468.22x = 395,039,013,151.84
  5. Step 5: Solve for x
    x = 395,039,013,151.84/645,468.22
  6. Step 6: Final answer
    x = 612,019.31

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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.