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Finding the Fourth Proportional to 613,628.18, 919,802.42 and 343,360.08

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Solution

The fourth proportional to 613,628.18, 919,802.42 and 343,360.08 is: 514,682.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,628.18 : 919,802.42 = 343,360.08 : x
  2. Step 2: Convert to fraction form
    613,628.18/919,802.42 = 343,360.08/x
  3. Step 3: Cross multiply
    613,628.18x = 919,802.42 × 343,360.08
  4. Step 4: Simplify right side
    613,628.18x = 315,823,435,474.95
  5. Step 5: Solve for x
    x = 315,823,435,474.95/613,628.18
  6. Step 6: Final answer
    x = 514,682.10

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1.5x scale

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.