Home / 933,620.40-1,400,102.55-428,423.40

Finding the Fourth Proportional to 933,620.40, 1,400,102.55 and 428,423.40

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Solution

The fourth proportional to 933,620.40, 1,400,102.55 and 428,423.40 is: 642,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    933,620.40 : 1,400,102.55 = 428,423.40 : x
  2. Step 2: Convert to fraction form
    933,620.40/1,400,102.55 = 428,423.40/x
  3. Step 3: Cross multiply
    933,620.40x = 1,400,102.55 × 428,423.40
  4. Step 4: Simplify right side
    933,620.40x = 599,836,694,819.67
  5. Step 5: Solve for x
    x = 599,836,694,819.67/933,620.40
  6. Step 6: Final answer
    x = 642,484.56

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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.