Home / 388,463,721.60-582,695,582.40-266,019,715.20

Finding the Fourth Proportional to 388,463,721.60, 582,695,582.40 and 266,019,715.20

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Solution

The fourth proportional to 388,463,721.60, 582,695,582.40 and 266,019,715.20 is: 399,029,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,463,721.60 : 582,695,582.40 = 266,019,715.20 : x
  2. Step 2: Convert to fraction form
    388,463,721.60/582,695,582.40 = 266,019,715.20/x
  3. Step 3: Cross multiply
    388,463,721.60x = 582,695,582.40 × 266,019,715.20
  4. Step 4: Simplify right side
    388,463,721.60x = 155,008,512,878,346,112
  5. Step 5: Solve for x
    x = 155,008,512,878,346,112/388,463,721.60
  6. Step 6: Final answer
    x = 399,029,572.80

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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.