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Finding the Fourth Proportional to 545,867.40, 818,801.10 and 488,130.60

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Solution

The fourth proportional to 545,867.40, 818,801.10 and 488,130.60 is: 732,195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,867.40 : 818,801.10 = 488,130.60 : x
  2. Step 2: Convert to fraction form
    545,867.40/818,801.10 = 488,130.60/x
  3. Step 3: Cross multiply
    545,867.40x = 818,801.10 × 488,130.60
  4. Step 4: Simplify right side
    545,867.40x = 399,681,872,223.66
  5. Step 5: Solve for x
    x = 399,681,872,223.66/545,867.40
  6. Step 6: Final answer
    x = 732,195.90

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Double scale
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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.