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Finding the Fourth Proportional to 628,559.56, 867,395.53 and 342,073.51

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Solution

The fourth proportional to 628,559.56, 867,395.53 and 342,073.51 is: 472,052.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,559.56 : 867,395.53 = 342,073.51 : x
  2. Step 2: Convert to fraction form
    628,559.56/867,395.53 = 342,073.51/x
  3. Step 3: Cross multiply
    628,559.56x = 867,395.53 × 342,073.51
  4. Step 4: Simplify right side
    628,559.56x = 296,713,033,505.41
  5. Step 5: Solve for x
    x = 296,713,033,505.41/628,559.56
  6. Step 6: Final answer
    x = 472,052.38

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Double scale
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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.