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Finding the Fourth Proportional to 521,403.50, 719,369.52 and 291,927

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Solution

The fourth proportional to 521,403.50, 719,369.52 and 291,927 is: 402,765.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,403.50 : 719,369.52 = 291,927 : x
  2. Step 2: Convert to fraction form
    521,403.50/719,369.52 = 291,927/x
  3. Step 3: Cross multiply
    521,403.50x = 719,369.52 × 291,927
  4. Step 4: Simplify right side
    521,403.50x = 210,003,385,865.04
  5. Step 5: Solve for x
    x = 210,003,385,865.04/521,403.50
  6. Step 6: Final answer
    x = 402,765.59

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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.