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Finding the Fourth Proportional to 628,483.84, 867,323.22 and 342,019.64

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Solution

The fourth proportional to 628,483.84, 867,323.22 and 342,019.64 is: 471,995.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,483.84 : 867,323.22 = 342,019.64 : x
  2. Step 2: Convert to fraction form
    628,483.84/867,323.22 = 342,019.64/x
  3. Step 3: Cross multiply
    628,483.84x = 867,323.22 × 342,019.64
  4. Step 4: Simplify right side
    628,483.84x = 296,641,575,468.04
  5. Step 5: Solve for x
    x = 296,641,575,468.04/628,483.84
  6. Step 6: Final answer
    x = 471,995.55

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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.