Home / 565,911,874.90-780,950,388.06-318,392,638.66

Finding the Fourth Proportional to 565,911,874.90, 780,950,388.06 and 318,392,638.66

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Solution

The fourth proportional to 565,911,874.90, 780,950,388.06 and 318,392,638.66 is: 439,377,340.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,911,874.90 : 780,950,388.06 = 318,392,638.66 : x
  2. Step 2: Convert to fraction form
    565,911,874.90/780,950,388.06 = 318,392,638.66/x
  3. Step 3: Cross multiply
    565,911,874.90x = 780,950,388.06 × 318,392,638.66
  4. Step 4: Simplify right side
    565,911,874.90x = 248,648,854,716,974,368
  5. Step 5: Solve for x
    x = 248,648,854,716,974,368/565,911,874.90
  6. Step 6: Final answer
    x = 439,377,340.79

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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.