Home / 693,539.10-1,039,617.45-318,908.70

Finding the Fourth Proportional to 693,539.10, 1,039,617.45 and 318,908.70

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Solution

The fourth proportional to 693,539.10, 1,039,617.45 and 318,908.70 is: 478,045.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,539.10 : 1,039,617.45 = 318,908.70 : x
  2. Step 2: Convert to fraction form
    693,539.10/1,039,617.45 = 318,908.70/x
  3. Step 3: Cross multiply
    693,539.10x = 1,039,617.45 × 318,908.70
  4. Step 4: Simplify right side
    693,539.10x = 331,543,049,476.82
  5. Step 5: Solve for x
    x = 331,543,049,476.82/693,539.10
  6. Step 6: Final answer
    x = 478,045.22

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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.