Home / 448,420,515.20-672,630,772.80-409,678,466.30

Finding the Fourth Proportional to 448,420,515.20, 672,630,772.80 and 409,678,466.30

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Solution

The fourth proportional to 448,420,515.20, 672,630,772.80 and 409,678,466.30 is: 614,517,699.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,420,515.20 : 672,630,772.80 = 409,678,466.30 : x
  2. Step 2: Convert to fraction form
    448,420,515.20/672,630,772.80 = 409,678,466.30/x
  3. Step 3: Cross multiply
    448,420,515.20x = 672,630,772.80 × 409,678,466.30
  4. Step 4: Simplify right side
    448,420,515.20x = 275,562,343,386,887,744
  5. Step 5: Solve for x
    x = 275,562,343,386,887,744/448,420,515.20
  6. Step 6: Final answer
    x = 614,517,699.45

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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.