Home / 420,467.40-630,701.10-404,137.80

Finding the Fourth Proportional to 420,467.40, 630,701.10 and 404,137.80

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Solution

The fourth proportional to 420,467.40, 630,701.10 and 404,137.80 is: 606,206.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,467.40 : 630,701.10 = 404,137.80 : x
  2. Step 2: Convert to fraction form
    420,467.40/630,701.10 = 404,137.80/x
  3. Step 3: Cross multiply
    420,467.40x = 630,701.10 × 404,137.80
  4. Step 4: Simplify right side
    420,467.40x = 254,890,155,011.58
  5. Step 5: Solve for x
    x = 254,890,155,011.58/420,467.40
  6. Step 6: Final answer
    x = 606,206.70

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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.