Home / 628,612.72-867,503.94-342,151.36

Finding the Fourth Proportional to 628,612.72, 867,503.94 and 342,151.36

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Solution

The fourth proportional to 628,612.72, 867,503.94 and 342,151.36 is: 472,178.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,612.72 : 867,503.94 = 342,151.36 : x
  2. Step 2: Convert to fraction form
    628,612.72/867,503.94 = 342,151.36/x
  3. Step 3: Cross multiply
    628,612.72x = 867,503.94 × 342,151.36
  4. Step 4: Simplify right side
    628,612.72x = 296,817,652,876.36
  5. Step 5: Solve for x
    x = 296,817,652,876.36/628,612.72
  6. Step 6: Final answer
    x = 472,178.88

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1.5x scale

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.