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Finding the Fourth Proportional to 573,499.19, 791,415.87 and 311,848.79

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Solution

The fourth proportional to 573,499.19, 791,415.87 and 311,848.79 is: 430,344.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,499.19 : 791,415.87 = 311,848.79 : x
  2. Step 2: Convert to fraction form
    573,499.19/791,415.87 = 311,848.79/x
  3. Step 3: Cross multiply
    573,499.19x = 791,415.87 × 311,848.79
  4. Step 4: Simplify right side
    573,499.19x = 246,802,076,319.79
  5. Step 5: Solve for x
    x = 246,802,076,319.79/573,499.19
  6. Step 6: Final answer
    x = 430,344.25

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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.