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Finding the Fourth Proportional to 455,605.20, 683,407.80 and 403,117.20

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Solution

The fourth proportional to 455,605.20, 683,407.80 and 403,117.20 is: 604,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,605.20 : 683,407.80 = 403,117.20 : x
  2. Step 2: Convert to fraction form
    455,605.20/683,407.80 = 403,117.20/x
  3. Step 3: Cross multiply
    455,605.20x = 683,407.80 × 403,117.20
  4. Step 4: Simplify right side
    455,605.20x = 275,493,438,794.16
  5. Step 5: Solve for x
    x = 275,493,438,794.16/455,605.20
  6. Step 6: Final answer
    x = 604,675.80

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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.