Home / 1,478,632,912.60-2,217,949,368.90-388,226,205.40

Finding the Fourth Proportional to 1,478,632,912.60, 2,217,949,368.90 and 388,226,205.40

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Solution

The fourth proportional to 1,478,632,912.60, 2,217,949,368.90 and 388,226,205.40 is: 582,339,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,632,912.60 : 2,217,949,368.90 = 388,226,205.40 : x
  2. Step 2: Convert to fraction form
    1,478,632,912.60/2,217,949,368.90 = 388,226,205.40/x
  3. Step 3: Cross multiply
    1,478,632,912.60x = 2,217,949,368.90 × 388,226,205.40
  4. Step 4: Simplify right side
    1,478,632,912.60x = 861,066,067,257,371,776
  5. Step 5: Solve for x
    x = 861,066,067,257,371,776/1,478,632,912.60
  6. Step 6: Final answer
    x = 582,339,308.10

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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.