Home / 479,015,220.66-661,037,154.28-278,090,738.70

Finding the Fourth Proportional to 479,015,220.66, 661,037,154.28 and 278,090,738.70

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Solution

The fourth proportional to 479,015,220.66, 661,037,154.28 and 278,090,738.70 is: 383,762,984.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,015,220.66 : 661,037,154.28 = 278,090,738.70 : x
  2. Step 2: Convert to fraction form
    479,015,220.66/661,037,154.28 = 278,090,738.70/x
  3. Step 3: Cross multiply
    479,015,220.66x = 661,037,154.28 × 278,090,738.70
  4. Step 4: Simplify right side
    479,015,220.66x = 183,828,310,541,871,040
  5. Step 5: Solve for x
    x = 183,828,310,541,871,040/479,015,220.66
  6. Step 6: Final answer
    x = 383,762,984.17

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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.