Home / 1,328,712,773.70-1,993,069,160.55-812,152,121.70

Finding the Fourth Proportional to 1,328,712,773.70, 1,993,069,160.55 and 812,152,121.70

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Solution

The fourth proportional to 1,328,712,773.70, 1,993,069,160.55 and 812,152,121.70 is: 1,218,228,182.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,712,773.70 : 1,993,069,160.55 = 812,152,121.70 : x
  2. Step 2: Convert to fraction form
    1,328,712,773.70/1,993,069,160.55 = 812,152,121.70/x
  3. Step 3: Cross multiply
    1,328,712,773.70x = 1,993,069,160.55 × 812,152,121.70
  4. Step 4: Simplify right side
    1,328,712,773.70x = 1,618,675,347,435,520,512
  5. Step 5: Solve for x
    x = 1,618,675,347,435,520,512/1,328,712,773.70
  6. Step 6: Final answer
    x = 1,218,228,182.55

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.