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Finding the Fourth Proportional to 528,407,999.40, 791,100,344.70 and 528,407,999.40

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Solution

The fourth proportional to 528,407,999.40, 791,100,344.70 and 528,407,999.40 is: 791,100,344.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,407,999.40 : 791,100,344.70 = 528,407,999.40 : x
  2. Step 2: Convert to fraction form
    528,407,999.40/791,100,344.70 = 528,407,999.40/x
  3. Step 3: Cross multiply
    528,407,999.40x = 791,100,344.70 × 528,407,999.40
  4. Step 4: Simplify right side
    528,407,999.40x = 418,023,750,467,577,408
  5. Step 5: Solve for x
    x = 418,023,750,467,577,408/528,407,999.40
  6. Step 6: Final answer
    x = 791,100,344.70

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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.