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Finding the Fourth Proportional to 628,368, 867,141.12 and 373,713.60

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Solution

The fourth proportional to 628,368, 867,141.12 and 373,713.60 is: 515,720.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,368 : 867,141.12 = 373,713.60 : x
  2. Step 2: Convert to fraction form
    628,368/867,141.12 = 373,713.60/x
  3. Step 3: Cross multiply
    628,368x = 867,141.12 × 373,713.60
  4. Step 4: Simplify right side
    628,368x = 324,062,429,663.23
  5. Step 5: Solve for x
    x = 324,062,429,663.23/628,368
  6. Step 6: Final answer
    x = 515,720.77

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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.