Home / 993,820.80-1,490,731.20-328,886.40

Finding the Fourth Proportional to 993,820.80, 1,490,731.20 and 328,886.40

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Solution

The fourth proportional to 993,820.80, 1,490,731.20 and 328,886.40 is: 493,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,820.80 : 1,490,731.20 = 328,886.40 : x
  2. Step 2: Convert to fraction form
    993,820.80/1,490,731.20 = 328,886.40/x
  3. Step 3: Cross multiply
    993,820.80x = 1,490,731.20 × 328,886.40
  4. Step 4: Simplify right side
    993,820.80x = 490,281,217,735.68
  5. Step 5: Solve for x
    x = 490,281,217,735.68/993,820.80
  6. Step 6: Final answer
    x = 493,329.60

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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.