Home / 1,121,278,496.80-1,681,901,998.80-507,861,738.40

Finding the Fourth Proportional to 1,121,278,496.80, 1,681,901,998.80 and 507,861,738.40

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Solution

The fourth proportional to 1,121,278,496.80, 1,681,901,998.80 and 507,861,738.40 is: 761,785,475.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,278,496.80 : 1,681,901,998.80 = 507,861,738.40 : x
  2. Step 2: Convert to fraction form
    1,121,278,496.80/1,681,901,998.80 = 507,861,738.40/x
  3. Step 3: Cross multiply
    1,121,278,496.80x = 1,681,901,998.80 × 507,861,738.40
  4. Step 4: Simplify right side
    1,121,278,496.80x = 854,173,672,929,002,624
  5. Step 5: Solve for x
    x = 854,173,672,929,002,624/1,121,278,496.80
  6. Step 6: Final answer
    x = 761,785,475.57

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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.