Home / 420,235,682.10-630,448,001.55-247,623,645.30

Finding the Fourth Proportional to 420,235,682.10, 630,448,001.55 and 247,623,645.30

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Solution

The fourth proportional to 420,235,682.10, 630,448,001.55 and 247,623,645.30 is: 371,491,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,235,682.10 : 630,448,001.55 = 247,623,645.30 : x
  2. Step 2: Convert to fraction form
    420,235,682.10/630,448,001.55 = 247,623,645.30/x
  3. Step 3: Cross multiply
    420,235,682.10x = 630,448,001.55 × 247,623,645.30
  4. Step 4: Simplify right side
    420,235,682.10x = 156,113,832,315,911,040
  5. Step 5: Solve for x
    x = 156,113,832,315,911,040/420,235,682.10
  6. Step 6: Final answer
    x = 371,491,139.30

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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.