Home / 819,072,839.70-1,228,609,259.55-528,835,194.90

Finding the Fourth Proportional to 819,072,839.70, 1,228,609,259.55 and 528,835,194.90

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Solution

The fourth proportional to 819,072,839.70, 1,228,609,259.55 and 528,835,194.90 is: 793,252,792.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,072,839.70 : 1,228,609,259.55 = 528,835,194.90 : x
  2. Step 2: Convert to fraction form
    819,072,839.70/1,228,609,259.55 = 528,835,194.90/x
  3. Step 3: Cross multiply
    819,072,839.70x = 1,228,609,259.55 × 528,835,194.90
  4. Step 4: Simplify right side
    819,072,839.70x = 649,731,817,230,068,864
  5. Step 5: Solve for x
    x = 649,731,817,230,068,864/819,072,839.70
  6. Step 6: Final answer
    x = 793,252,792.35

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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.