Home / 721,347.81-1,082,319.77-316,330.44

Finding the Fourth Proportional to 721,347.81, 1,082,319.77 and 316,330.44

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Solution

The fourth proportional to 721,347.81, 1,082,319.77 and 316,330.44 is: 474,626.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,347.81 : 1,082,319.77 = 316,330.44 : x
  2. Step 2: Convert to fraction form
    721,347.81/1,082,319.77 = 316,330.44/x
  3. Step 3: Cross multiply
    721,347.81x = 1,082,319.77 × 316,330.44
  4. Step 4: Simplify right side
    721,347.81x = 342,370,689,855.63
  5. Step 5: Solve for x
    x = 342,370,689,855.63/721,347.81
  6. Step 6: Final answer
    x = 474,626.37

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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.