Home / 866,143,721.70-1,299,215,582.55-406,978,697.70

Finding the Fourth Proportional to 866,143,721.70, 1,299,215,582.55 and 406,978,697.70

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Solution

The fourth proportional to 866,143,721.70, 1,299,215,582.55 and 406,978,697.70 is: 610,468,046.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,143,721.70 : 1,299,215,582.55 = 406,978,697.70 : x
  2. Step 2: Convert to fraction form
    866,143,721.70/1,299,215,582.55 = 406,978,697.70/x
  3. Step 3: Cross multiply
    866,143,721.70x = 1,299,215,582.55 × 406,978,697.70
  4. Step 4: Simplify right side
    866,143,721.70x = 528,753,065,817,745,792
  5. Step 5: Solve for x
    x = 528,753,065,817,745,792/866,143,721.70
  6. Step 6: Final answer
    x = 610,468,046.55

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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.