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Finding the Fourth Proportional to 879,062.60, 1,318,593.90 and 726,847.40

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Solution

The fourth proportional to 879,062.60, 1,318,593.90 and 726,847.40 is: 1,090,271.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,062.60 : 1,318,593.90 = 726,847.40 : x
  2. Step 2: Convert to fraction form
    879,062.60/1,318,593.90 = 726,847.40/x
  3. Step 3: Cross multiply
    879,062.60x = 1,318,593.90 × 726,847.40
  4. Step 4: Simplify right side
    879,062.60x = 958,416,547,870.86
  5. Step 5: Solve for x
    x = 958,416,547,870.86/879,062.60
  6. Step 6: Final answer
    x = 1,090,271.10

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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.