Home / 811,152,961.26-1,216,716,145.63-258,447,881.46

Finding the Fourth Proportional to 811,152,961.26, 1,216,716,145.63 and 258,447,881.46

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Solution

The fourth proportional to 811,152,961.26, 1,216,716,145.63 and 258,447,881.46 is: 387,667,585.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,152,961.26 : 1,216,716,145.63 = 258,447,881.46 : x
  2. Step 2: Convert to fraction form
    811,152,961.26/1,216,716,145.63 = 258,447,881.46/x
  3. Step 3: Cross multiply
    811,152,961.26x = 1,216,716,145.63 × 258,447,881.46
  4. Step 4: Simplify right side
    811,152,961.26x = 314,457,710,174,958,080
  5. Step 5: Solve for x
    x = 314,457,710,174,958,080/811,152,961.26
  6. Step 6: Final answer
    x = 387,667,585.76

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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.