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Finding the Fourth Proportional to 628,734.41, 867,653.59 and 342,256.64

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Solution

The fourth proportional to 628,734.41, 867,653.59 and 342,256.64 is: 472,314.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,734.41 : 867,653.59 = 342,256.64 : x
  2. Step 2: Convert to fraction form
    628,734.41/867,653.59 = 342,256.64/x
  3. Step 3: Cross multiply
    628,734.41x = 867,653.59 × 342,256.64
  4. Step 4: Simplify right side
    628,734.41x = 296,960,201,541.70
  5. Step 5: Solve for x
    x = 296,960,201,541.70/628,734.41
  6. Step 6: Final answer
    x = 472,314.22

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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.