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Finding the Fourth Proportional to 520,043.32, 717,646.04 and 290,602.49

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Solution

The fourth proportional to 520,043.32, 717,646.04 and 290,602.49 is: 401,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,043.32 : 717,646.04 = 290,602.49 : x
  2. Step 2: Convert to fraction form
    520,043.32/717,646.04 = 290,602.49/x
  3. Step 3: Cross multiply
    520,043.32x = 717,646.04 × 290,602.49
  4. Step 4: Simplify right side
    520,043.32x = 208,549,724,709.63
  5. Step 5: Solve for x
    x = 208,549,724,709.63/520,043.32
  6. Step 6: Final answer
    x = 401,023.76

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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.