Home / 1,298,855.70-1,948,328.10-400,290.30

Finding the Fourth Proportional to 1,298,855.70, 1,948,328.10 and 400,290.30

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Solution

The fourth proportional to 1,298,855.70, 1,948,328.10 and 400,290.30 is: 600,449.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,855.70 : 1,948,328.10 = 400,290.30 : x
  2. Step 2: Convert to fraction form
    1,298,855.70/1,948,328.10 = 400,290.30/x
  3. Step 3: Cross multiply
    1,298,855.70x = 1,948,328.10 × 400,290.30
  4. Step 4: Simplify right side
    1,298,855.70x = 779,896,839,647.43
  5. Step 5: Solve for x
    x = 779,896,839,647.43/1,298,855.70
  6. Step 6: Final answer
    x = 600,449.18

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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.