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Finding the Fourth Proportional to 628,608.84, 867,498.59 and 342,147.48

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Solution

The fourth proportional to 628,608.84, 867,498.59 and 342,147.48 is: 472,173.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,608.84 : 867,498.59 = 342,147.48 : x
  2. Step 2: Convert to fraction form
    628,608.84/867,498.59 = 342,147.48/x
  3. Step 3: Cross multiply
    628,608.84x = 867,498.59 × 342,147.48
  4. Step 4: Simplify right side
    628,608.84x = 296,812,457,327.42
  5. Step 5: Solve for x
    x = 296,812,457,327.42/628,608.84
  6. Step 6: Final answer
    x = 472,173.53

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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.