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Finding the Fourth Proportional to 983,759.72, 1,475,846.93 and 318,859.88

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Solution

The fourth proportional to 983,759.72, 1,475,846.93 and 318,859.88 is: 478,357.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    983,759.72 : 1,475,846.93 = 318,859.88 : x
  2. Step 2: Convert to fraction form
    983,759.72/1,475,846.93 = 318,859.88/x
  3. Step 3: Cross multiply
    983,759.72x = 1,475,846.93 × 318,859.88
  4. Step 4: Simplify right side
    983,759.72x = 470,588,368,416.08
  5. Step 5: Solve for x
    x = 470,588,368,416.08/983,759.72
  6. Step 6: Final answer
    x = 478,357.02

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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.