Home / 721,347.62-1,082,319.50-316,330.26

Finding the Fourth Proportional to 721,347.62, 1,082,319.50 and 316,330.26

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Solution

The fourth proportional to 721,347.62, 1,082,319.50 and 316,330.26 is: 474,626.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,347.62 : 1,082,319.50 = 316,330.26 : x
  2. Step 2: Convert to fraction form
    721,347.62/1,082,319.50 = 316,330.26/x
  3. Step 3: Cross multiply
    721,347.62x = 1,082,319.50 × 316,330.26
  4. Step 4: Simplify right side
    721,347.62x = 342,370,408,838.07
  5. Step 5: Solve for x
    x = 342,370,408,838.07/721,347.62
  6. Step 6: Final answer
    x = 474,626.10

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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.