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Finding the Fourth Proportional to 545,811.60, 818,717.40 and 493,323.60

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Solution

The fourth proportional to 545,811.60, 818,717.40 and 493,323.60 is: 739,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,811.60 : 818,717.40 = 493,323.60 : x
  2. Step 2: Convert to fraction form
    545,811.60/818,717.40 = 493,323.60/x
  3. Step 3: Cross multiply
    545,811.60x = 818,717.40 × 493,323.60
  4. Step 4: Simplify right side
    545,811.60x = 403,892,615,150.64
  5. Step 5: Solve for x
    x = 403,892,615,150.64/545,811.60
  6. Step 6: Final answer
    x = 739,985.40

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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.