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Finding the Fourth Proportional to 653,818.68, 978,900.80 and 353,222.28

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Solution

The fourth proportional to 653,818.68, 978,900.80 and 353,222.28 is: 528,846.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,818.68 : 978,900.80 = 353,222.28 : x
  2. Step 2: Convert to fraction form
    653,818.68/978,900.80 = 353,222.28/x
  3. Step 3: Cross multiply
    653,818.68x = 978,900.80 × 353,222.28
  4. Step 4: Simplify right side
    653,818.68x = 345,769,570,703.71
  5. Step 5: Solve for x
    x = 345,769,570,703.71/653,818.68
  6. Step 6: Final answer
    x = 528,846.27

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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.