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Finding the Fourth Proportional to 455,421.40, 683,132.10 and 366,847.90

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Solution

The fourth proportional to 455,421.40, 683,132.10 and 366,847.90 is: 550,271.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,421.40 : 683,132.10 = 366,847.90 : x
  2. Step 2: Convert to fraction form
    455,421.40/683,132.10 = 366,847.90/x
  3. Step 3: Cross multiply
    455,421.40x = 683,132.10 × 366,847.90
  4. Step 4: Simplify right side
    455,421.40x = 250,605,576,307.59
  5. Step 5: Solve for x
    x = 250,605,576,307.59/455,421.40
  6. Step 6: Final answer
    x = 550,271.85

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Similar ratio
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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.