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Finding the Fourth Proportional to 559,777.48, 772,500.96 and 305,128.66

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Solution

The fourth proportional to 559,777.48, 772,500.96 and 305,128.66 is: 421,081.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,777.48 : 772,500.96 = 305,128.66 : x
  2. Step 2: Convert to fraction form
    559,777.48/772,500.96 = 305,128.66/x
  3. Step 3: Cross multiply
    559,777.48x = 772,500.96 × 305,128.66
  4. Step 4: Simplify right side
    559,777.48x = 235,712,182,773.51
  5. Step 5: Solve for x
    x = 235,712,182,773.51/559,777.48
  6. Step 6: Final answer
    x = 421,081.93

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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.