Home / 478,987,401.05-718,478,086.67-257,762,947.86

Finding the Fourth Proportional to 478,987,401.05, 718,478,086.67 and 257,762,947.86

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Solution

The fourth proportional to 478,987,401.05, 718,478,086.67 and 257,762,947.86 is: 386,642,799.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,987,401.05 : 718,478,086.67 = 257,762,947.86 : x
  2. Step 2: Convert to fraction form
    478,987,401.05/718,478,086.67 = 257,762,947.86/x
  3. Step 3: Cross multiply
    478,987,401.05x = 718,478,086.67 × 257,762,947.86
  4. Step 4: Simplify right side
    478,987,401.05x = 185,197,029,592,871,776
  5. Step 5: Solve for x
    x = 185,197,029,592,871,776/478,987,401.05
  6. Step 6: Final answer
    x = 386,642,799.34

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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.