Home / 402,408,045.30-603,612,067.95-279,964,038.90

Finding the Fourth Proportional to 402,408,045.30, 603,612,067.95 and 279,964,038.90

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Solution

The fourth proportional to 402,408,045.30, 603,612,067.95 and 279,964,038.90 is: 419,946,058.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,045.30 : 603,612,067.95 = 279,964,038.90 : x
  2. Step 2: Convert to fraction form
    402,408,045.30/603,612,067.95 = 279,964,038.90/x
  3. Step 3: Cross multiply
    402,408,045.30x = 603,612,067.95 × 279,964,038.90
  4. Step 4: Simplify right side
    402,408,045.30x = 168,989,672,472,063,232
  5. Step 5: Solve for x
    x = 168,989,672,472,063,232/402,408,045.30
  6. Step 6: Final answer
    x = 419,946,058.35

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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.