Home / 661,518.40-912,819.36-374,981.44

Finding the Fourth Proportional to 661,518.40, 912,819.36 and 374,981.44

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Solution

The fourth proportional to 661,518.40, 912,819.36 and 374,981.44 is: 517,431.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,518.40 : 912,819.36 = 374,981.44 : x
  2. Step 2: Convert to fraction form
    661,518.40/912,819.36 = 374,981.44/x
  3. Step 3: Cross multiply
    661,518.40x = 912,819.36 × 374,981.44
  4. Step 4: Simplify right side
    661,518.40x = 342,290,318,072.68
  5. Step 5: Solve for x
    x = 342,290,318,072.68/661,518.40
  6. Step 6: Final answer
    x = 517,431.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.