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Finding the Fourth Proportional to 978,097.10, 1,467,145.65 and 971,876.30

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Solution

The fourth proportional to 978,097.10, 1,467,145.65 and 971,876.30 is: 1,457,814.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,097.10 : 1,467,145.65 = 971,876.30 : x
  2. Step 2: Convert to fraction form
    978,097.10/1,467,145.65 = 971,876.30/x
  3. Step 3: Cross multiply
    978,097.10x = 1,467,145.65 × 971,876.30
  4. Step 4: Simplify right side
    978,097.10x = 1,425,884,085,883.10
  5. Step 5: Solve for x
    x = 1,425,884,085,883.10/978,097.10
  6. Step 6: Final answer
    x = 1,457,814.45

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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.