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Finding the Fourth Proportional to 612,066.60, 918,099.90 and 486,095.40

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Solution

The fourth proportional to 612,066.60, 918,099.90 and 486,095.40 is: 729,143.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,066.60 : 918,099.90 = 486,095.40 : x
  2. Step 2: Convert to fraction form
    612,066.60/918,099.90 = 486,095.40/x
  3. Step 3: Cross multiply
    612,066.60x = 918,099.90 × 486,095.40
  4. Step 4: Simplify right side
    612,066.60x = 446,284,138,130.46
  5. Step 5: Solve for x
    x = 446,284,138,130.46/612,066.60
  6. Step 6: Final answer
    x = 729,143.10

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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.