Home / 753,140.60-1,128,836.10-303,639.20

Finding the Fourth Proportional to 753,140.60, 1,128,836.10 and 303,639.20

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Solution

The fourth proportional to 753,140.60, 1,128,836.10 and 303,639.20 is: 455,106.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,140.60 : 1,128,836.10 = 303,639.20 : x
  2. Step 2: Convert to fraction form
    753,140.60/1,128,836.10 = 303,639.20/x
  3. Step 3: Cross multiply
    753,140.60x = 1,128,836.10 × 303,639.20
  4. Step 4: Simplify right side
    753,140.60x = 342,758,890,335.12
  5. Step 5: Solve for x
    x = 342,758,890,335.12/753,140.60
  6. Step 6: Final answer
    x = 455,106.11

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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.