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Finding the Fourth Proportional to 662,503.60, 993,755.40 and 438,117.40

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Solution

The fourth proportional to 662,503.60, 993,755.40 and 438,117.40 is: 657,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,503.60 : 993,755.40 = 438,117.40 : x
  2. Step 2: Convert to fraction form
    662,503.60/993,755.40 = 438,117.40/x
  3. Step 3: Cross multiply
    662,503.60x = 993,755.40 × 438,117.40
  4. Step 4: Simplify right side
    662,503.60x = 435,381,532,083.96
  5. Step 5: Solve for x
    x = 435,381,532,083.96/662,503.60
  6. Step 6: Final answer
    x = 657,176.10

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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.