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Finding the Fourth Proportional to 520,635.12, 718,539.48 and 294,278.64

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Solution

The fourth proportional to 520,635.12, 718,539.48 and 294,278.64 is: 406,140.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,635.12 : 718,539.48 = 294,278.64 : x
  2. Step 2: Convert to fraction form
    520,635.12/718,539.48 = 294,278.64/x
  3. Step 3: Cross multiply
    520,635.12x = 718,539.48 × 294,278.64
  4. Step 4: Simplify right side
    520,635.12x = 211,450,820,960.71
  5. Step 5: Solve for x
    x = 211,450,820,960.71/520,635.12
  6. Step 6: Final answer
    x = 406,140.14

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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.