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Finding the Fourth Proportional to 543,624.40, 815,436.60 and 459,643.60

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Solution

The fourth proportional to 543,624.40, 815,436.60 and 459,643.60 is: 689,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,624.40 : 815,436.60 = 459,643.60 : x
  2. Step 2: Convert to fraction form
    543,624.40/815,436.60 = 459,643.60/x
  3. Step 3: Cross multiply
    543,624.40x = 815,436.60 × 459,643.60
  4. Step 4: Simplify right side
    543,624.40x = 374,810,214,395.76
  5. Step 5: Solve for x
    x = 374,810,214,395.76/543,624.40
  6. Step 6: Final answer
    x = 689,465.40

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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.