Home / 800,906,885.56-1,105,363,474.32-578,607,783.40

Finding the Fourth Proportional to 800,906,885.56, 1,105,363,474.32 and 578,607,783.40

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Solution

The fourth proportional to 800,906,885.56, 1,105,363,474.32 and 578,607,783.40 is: 798,559,634.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,906,885.56 : 1,105,363,474.32 = 578,607,783.40 : x
  2. Step 2: Convert to fraction form
    800,906,885.56/1,105,363,474.32 = 578,607,783.40/x
  3. Step 3: Cross multiply
    800,906,885.56x = 1,105,363,474.32 × 578,607,783.40
  4. Step 4: Simplify right side
    800,906,885.56x = 639,571,909,727,617,920
  5. Step 5: Solve for x
    x = 639,571,909,727,617,920/800,906,885.56
  6. Step 6: Final answer
    x = 798,559,634.41

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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.