Home / 1,478,525,465.28-2,040,381,266.42-818,486,765.76

Finding the Fourth Proportional to 1,478,525,465.28, 2,040,381,266.42 and 818,486,765.76

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Solution

The fourth proportional to 1,478,525,465.28, 2,040,381,266.42 and 818,486,765.76 is: 1,129,520,662.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,525,465.28 : 2,040,381,266.42 = 818,486,765.76 : x
  2. Step 2: Convert to fraction form
    1,478,525,465.28/2,040,381,266.42 = 818,486,765.76/x
  3. Step 3: Cross multiply
    1,478,525,465.28x = 2,040,381,266.42 × 818,486,765.76
  4. Step 4: Simplify right side
    1,478,525,465.28x = 1,670,025,063,669,398,784
  5. Step 5: Solve for x
    x = 1,670,025,063,669,398,784/1,478,525,465.28
  6. Step 6: Final answer
    x = 1,129,520,662.91

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Double scale
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1.5x scale

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.