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Finding the Fourth Proportional to 520,760.34, 718,615.32 and 291,277.86

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Solution

The fourth proportional to 520,760.34, 718,615.32 and 291,277.86 is: 401,944.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,760.34 : 718,615.32 = 291,277.86 : x
  2. Step 2: Convert to fraction form
    520,760.34/718,615.32 = 291,277.86/x
  3. Step 3: Cross multiply
    520,760.34x = 718,615.32 × 291,277.86
  4. Step 4: Simplify right side
    520,760.34x = 209,316,732,572.82
  5. Step 5: Solve for x
    x = 209,316,732,572.82/520,760.34
  6. Step 6: Final answer
    x = 401,944.46

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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.