Home / 1,359,905,338.40-2,039,858,007.60-439,874,679.20

Finding the Fourth Proportional to 1,359,905,338.40, 2,039,858,007.60 and 439,874,679.20

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Solution

The fourth proportional to 1,359,905,338.40, 2,039,858,007.60 and 439,874,679.20 is: 659,812,018.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359,905,338.40 : 2,039,858,007.60 = 439,874,679.20 : x
  2. Step 2: Convert to fraction form
    1,359,905,338.40/2,039,858,007.60 = 439,874,679.20/x
  3. Step 3: Cross multiply
    1,359,905,338.40x = 2,039,858,007.60 × 439,874,679.20
  4. Step 4: Simplify right side
    1,359,905,338.40x = 897,281,886,706,601,088
  5. Step 5: Solve for x
    x = 897,281,886,706,601,088/1,359,905,338.40
  6. Step 6: Final answer
    x = 659,812,018.80

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Double scale
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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.