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Finding the Fourth Proportional to 628,614.16, 867,506.08 and 342,152.80

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Solution

The fourth proportional to 628,614.16, 867,506.08 and 342,152.80 is: 472,180.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,614.16 : 867,506.08 = 342,152.80 : x
  2. Step 2: Convert to fraction form
    628,614.16/867,506.08 = 342,152.80/x
  3. Step 3: Cross multiply
    628,614.16x = 867,506.08 × 342,152.80
  4. Step 4: Simplify right side
    628,614.16x = 296,819,634,289.02
  5. Step 5: Solve for x
    x = 296,819,634,289.02/628,614.16
  6. Step 6: Final answer
    x = 472,180.95

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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.