Home / 1,392,001,545.10-1,920,492,027.80-789,107,532.34

Finding the Fourth Proportional to 1,392,001,545.10, 1,920,492,027.80 and 789,107,532.34

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Solution

The fourth proportional to 1,392,001,545.10, 1,920,492,027.80 and 789,107,532.34 is: 1,088,701,898.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,001,545.10 : 1,920,492,027.80 = 789,107,532.34 : x
  2. Step 2: Convert to fraction form
    1,392,001,545.10/1,920,492,027.80 = 789,107,532.34/x
  3. Step 3: Cross multiply
    1,392,001,545.10x = 1,920,492,027.80 × 789,107,532.34
  4. Step 4: Simplify right side
    1,392,001,545.10x = 1,515,474,724,935,900,672
  5. Step 5: Solve for x
    x = 1,515,474,724,935,900,672/1,392,001,545.10
  6. Step 6: Final answer
    x = 1,088,701,898.55

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Double scale
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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.