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Finding the Fourth Proportional to 559,191.05, 838,087.10 and 440,393.21

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Solution

The fourth proportional to 559,191.05, 838,087.10 and 440,393.21 is: 660,038.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,191.05 : 838,087.10 = 440,393.21 : x
  2. Step 2: Convert to fraction form
    559,191.05/838,087.10 = 440,393.21/x
  3. Step 3: Cross multiply
    559,191.05x = 838,087.10 × 440,393.21
  4. Step 4: Simplify right side
    559,191.05x = 369,087,866,026.63
  5. Step 5: Solve for x
    x = 369,087,866,026.63/559,191.05
  6. Step 6: Final answer
    x = 660,038.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.