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Finding the Fourth Proportional to 642,063.23, 886,075.98 and 351,695.24

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Solution

The fourth proportional to 642,063.23, 886,075.98 and 351,695.24 is: 485,355.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,063.23 : 886,075.98 = 351,695.24 : x
  2. Step 2: Convert to fraction form
    642,063.23/886,075.98 = 351,695.24/x
  3. Step 3: Cross multiply
    642,063.23x = 886,075.98 × 351,695.24
  4. Step 4: Simplify right side
    642,063.23x = 311,628,704,444.34
  5. Step 5: Solve for x
    x = 311,628,704,444.34/642,063.23
  6. Step 6: Final answer
    x = 485,355.16

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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.