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Finding the Fourth Proportional to 520,680.90, 718,530.06 and 294,326.40

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Solution

The fourth proportional to 520,680.90, 718,530.06 and 294,326.40 is: 406,165.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,680.90 : 718,530.06 = 294,326.40 : x
  2. Step 2: Convert to fraction form
    520,680.90/718,530.06 = 294,326.40/x
  3. Step 3: Cross multiply
    520,680.90x = 718,530.06 × 294,326.40
  4. Step 4: Simplify right side
    520,680.90x = 211,482,365,851.58
  5. Step 5: Solve for x
    x = 211,482,365,851.58/520,680.90
  6. Step 6: Final answer
    x = 406,165.02

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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.