Home / 721,890.30-1,082,461.68-384,840.45

Finding the Fourth Proportional to 721,890.30, 1,082,461.68 and 384,840.45

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Solution

The fourth proportional to 721,890.30, 1,082,461.68 and 384,840.45 is: 577,061.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,890.30 : 1,082,461.68 = 384,840.45 : x
  2. Step 2: Convert to fraction form
    721,890.30/1,082,461.68 = 384,840.45/x
  3. Step 3: Cross multiply
    721,890.30x = 1,082,461.68 × 384,840.45
  4. Step 4: Simplify right side
    721,890.30x = 416,575,040,038.96
  5. Step 5: Solve for x
    x = 416,575,040,038.96/721,890.30
  6. Step 6: Final answer
    x = 577,061.42

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1.5x scale

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.