Home / 511,090,117.80-766,635,176.70-388,646,111.40

Finding the Fourth Proportional to 511,090,117.80, 766,635,176.70 and 388,646,111.40

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Solution

The fourth proportional to 511,090,117.80, 766,635,176.70 and 388,646,111.40 is: 582,969,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,090,117.80 : 766,635,176.70 = 388,646,111.40 : x
  2. Step 2: Convert to fraction form
    511,090,117.80/766,635,176.70 = 388,646,111.40/x
  3. Step 3: Cross multiply
    511,090,117.80x = 766,635,176.70 × 388,646,111.40
  4. Step 4: Simplify right side
    511,090,117.80x = 297,949,780,286,906,880
  5. Step 5: Solve for x
    x = 297,949,780,286,906,880/511,090,117.80
  6. Step 6: Final answer
    x = 582,969,167.10

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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.