Home / 401,830.80-603,437.40-389,389.20

Finding the Fourth Proportional to 401,830.80, 603,437.40 and 389,389.20

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Solution

The fourth proportional to 401,830.80, 603,437.40 and 389,389.20 is: 584,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,830.80 : 603,437.40 = 389,389.20 : x
  2. Step 2: Convert to fraction form
    401,830.80/603,437.40 = 389,389.20/x
  3. Step 3: Cross multiply
    401,830.80x = 603,437.40 × 389,389.20
  4. Step 4: Simplify right side
    401,830.80x = 234,972,006,436.08
  5. Step 5: Solve for x
    x = 234,972,006,436.08/401,830.80
  6. Step 6: Final answer
    x = 584,753.60

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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.