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Finding the Fourth Proportional to 879,892.80, 1,319,709.60 and 248,870.40

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Solution

The fourth proportional to 879,892.80, 1,319,709.60 and 248,870.40 is: 373,268.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,892.80 : 1,319,709.60 = 248,870.40 : x
  2. Step 2: Convert to fraction form
    879,892.80/1,319,709.60 = 248,870.40/x
  3. Step 3: Cross multiply
    879,892.80x = 1,319,709.60 × 248,870.40
  4. Step 4: Simplify right side
    879,892.80x = 328,436,656,035.84
  5. Step 5: Solve for x
    x = 328,436,656,035.84/879,892.80
  6. Step 6: Final answer
    x = 373,268.94

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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.