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Finding the Fourth Proportional to 978,805,512.60, 1,468,208,268.90 and 543,449,045.40

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Solution

The fourth proportional to 978,805,512.60, 1,468,208,268.90 and 543,449,045.40 is: 815,173,568.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,805,512.60 : 1,468,208,268.90 = 543,449,045.40 : x
  2. Step 2: Convert to fraction form
    978,805,512.60/1,468,208,268.90 = 543,449,045.40/x
  3. Step 3: Cross multiply
    978,805,512.60x = 1,468,208,268.90 × 543,449,045.40
  4. Step 4: Simplify right side
    978,805,512.60x = 797,896,382,182,091,520
  5. Step 5: Solve for x
    x = 797,896,382,182,091,520/978,805,512.60
  6. Step 6: Final answer
    x = 815,173,568.10

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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.