Home / 1,392,191,486.74-1,920,753,570.81-789,297,432.67

Finding the Fourth Proportional to 1,392,191,486.74, 1,920,753,570.81 and 789,297,432.67

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Solution

The fourth proportional to 1,392,191,486.74, 1,920,753,570.81 and 789,297,432.67 is: 1,088,963,606.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,191,486.74 : 1,920,753,570.81 = 789,297,432.67 : x
  2. Step 2: Convert to fraction form
    1,392,191,486.74/1,920,753,570.81 = 789,297,432.67/x
  3. Step 3: Cross multiply
    1,392,191,486.74x = 1,920,753,570.81 × 789,297,432.67
  4. Step 4: Simplify right side
    1,392,191,486.74x = 1,516,045,862,232,067,840
  5. Step 5: Solve for x
    x = 1,516,045,862,232,067,840/1,392,191,486.74
  6. Step 6: Final answer
    x = 1,088,963,606.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.