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Finding the Fourth Proportional to 722,784,019.20, 1,084,176,028.80 and 613,944,902.40

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Solution

The fourth proportional to 722,784,019.20, 1,084,176,028.80 and 613,944,902.40 is: 920,917,353.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,784,019.20 : 1,084,176,028.80 = 613,944,902.40 : x
  2. Step 2: Convert to fraction form
    722,784,019.20/1,084,176,028.80 = 613,944,902.40/x
  3. Step 3: Cross multiply
    722,784,019.20x = 1,084,176,028.80 × 613,944,902.40
  4. Step 4: Simplify right side
    722,784,019.20x = 665,624,346,186,035,584
  5. Step 5: Solve for x
    x = 665,624,346,186,035,584/722,784,019.20
  6. Step 6: Final answer
    x = 920,917,353.60

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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.