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Finding the Fourth Proportional to 539,419.32, 805,027.34 and 479,633.76

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Solution

The fourth proportional to 539,419.32, 805,027.34 and 479,633.76 is: 715,803.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,419.32 : 805,027.34 = 479,633.76 : x
  2. Step 2: Convert to fraction form
    539,419.32/805,027.34 = 479,633.76/x
  3. Step 3: Cross multiply
    539,419.32x = 805,027.34 × 479,633.76
  4. Step 4: Simplify right side
    539,419.32x = 386,118,287,588.83
  5. Step 5: Solve for x
    x = 386,118,287,588.83/539,419.32
  6. Step 6: Final answer
    x = 715,803.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.