Home / 876,588,369.72-1,209,711,531.87-500,237,464.61

Finding the Fourth Proportional to 876,588,369.72, 1,209,711,531.87 and 500,237,464.61

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Solution

The fourth proportional to 876,588,369.72, 1,209,711,531.87 and 500,237,464.61 is: 690,338,875.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,588,369.72 : 1,209,711,531.87 = 500,237,464.61 : x
  2. Step 2: Convert to fraction form
    876,588,369.72/1,209,711,531.87 = 500,237,464.61/x
  3. Step 3: Cross multiply
    876,588,369.72x = 1,209,711,531.87 × 500,237,464.61
  4. Step 4: Simplify right side
    876,588,369.72x = 605,143,029,606,079,360
  5. Step 5: Solve for x
    x = 605,143,029,606,079,360/876,588,369.72
  6. Step 6: Final answer
    x = 690,338,875.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.