Home / 689,993.84-1,034,931.44-420,051.88

Finding the Fourth Proportional to 689,993.84, 1,034,931.44 and 420,051.88

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Solution

The fourth proportional to 689,993.84, 1,034,931.44 and 420,051.88 is: 630,041.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,993.84 : 1,034,931.44 = 420,051.88 : x
  2. Step 2: Convert to fraction form
    689,993.84/1,034,931.44 = 420,051.88/x
  3. Step 3: Cross multiply
    689,993.84x = 1,034,931.44 × 420,051.88
  4. Step 4: Simplify right side
    689,993.84x = 434,724,897,043.11
  5. Step 5: Solve for x
    x = 434,724,897,043.11/689,993.84
  6. Step 6: Final answer
    x = 630,041.71

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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.