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Finding the Fourth Proportional to 455,416.40, 683,124.60 and 266,459.60

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Solution

The fourth proportional to 455,416.40, 683,124.60 and 266,459.60 is: 399,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,416.40 : 683,124.60 = 266,459.60 : x
  2. Step 2: Convert to fraction form
    455,416.40/683,124.60 = 266,459.60/x
  3. Step 3: Cross multiply
    455,416.40x = 683,124.60 × 266,459.60
  4. Step 4: Simplify right side
    455,416.40x = 182,025,107,666.16
  5. Step 5: Solve for x
    x = 182,025,107,666.16/455,416.40
  6. Step 6: Final answer
    x = 399,689.40

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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.