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Finding the Fourth Proportional to 978,468.78, 1,466,030.01 and 765,154.32

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Solution

The fourth proportional to 978,468.78, 1,466,030.01 and 765,154.32 is: 1,146,423.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,468.78 : 1,466,030.01 = 765,154.32 : x
  2. Step 2: Convert to fraction form
    978,468.78/1,466,030.01 = 765,154.32/x
  3. Step 3: Cross multiply
    978,468.78x = 1,466,030.01 × 765,154.32
  4. Step 4: Simplify right side
    978,468.78x = 1,121,739,195,401.14
  5. Step 5: Solve for x
    x = 1,121,739,195,401.14/978,468.78
  6. Step 6: Final answer
    x = 1,146,423.08

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.