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Finding the Fourth Proportional to 520,440.66, 718,406.29 and 339,196.68

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Solution

The fourth proportional to 520,440.66, 718,406.29 and 339,196.68 is: 468,220.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,440.66 : 718,406.29 = 339,196.68 : x
  2. Step 2: Convert to fraction form
    520,440.66/718,406.29 = 339,196.68/x
  3. Step 3: Cross multiply
    520,440.66x = 718,406.29 × 339,196.68
  4. Step 4: Simplify right side
    520,440.66x = 243,681,028,459.12
  5. Step 5: Solve for x
    x = 243,681,028,459.12/520,440.66
  6. Step 6: Final answer
    x = 468,220.58

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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.