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Finding the Fourth Proportional to 628,887.93, 867,770.98 and 353,235.20

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Solution

The fourth proportional to 628,887.93, 867,770.98 and 353,235.20 is: 487,411.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,887.93 : 867,770.98 = 353,235.20 : x
  2. Step 2: Convert to fraction form
    628,887.93/867,770.98 = 353,235.20/x
  3. Step 3: Cross multiply
    628,887.93x = 867,770.98 × 353,235.20
  4. Step 4: Simplify right side
    628,887.93x = 306,527,255,674.50
  5. Step 5: Solve for x
    x = 306,527,255,674.50/628,887.93
  6. Step 6: Final answer
    x = 487,411.58

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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.