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Finding the Fourth Proportional to 702,691.21, 969,713.66 and 380,401.06

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Solution

The fourth proportional to 702,691.21, 969,713.66 and 380,401.06 is: 524,953.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,691.21 : 969,713.66 = 380,401.06 : x
  2. Step 2: Convert to fraction form
    702,691.21/969,713.66 = 380,401.06/x
  3. Step 3: Cross multiply
    702,691.21x = 969,713.66 × 380,401.06
  4. Step 4: Simplify right side
    702,691.21x = 368,880,102,258.47
  5. Step 5: Solve for x
    x = 368,880,102,258.47/702,691.21
  6. Step 6: Final answer
    x = 524,953.35

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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.