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Finding the Fourth Proportional to 631,506,347.79, 871,381,944.48 and 363,530,380.89

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Solution

The fourth proportional to 631,506,347.79, 871,381,944.48 and 363,530,380.89 is: 501,616,193.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,506,347.79 : 871,381,944.48 = 363,530,380.89 : x
  2. Step 2: Convert to fraction form
    631,506,347.79/871,381,944.48 = 363,530,380.89/x
  3. Step 3: Cross multiply
    631,506,347.79x = 871,381,944.48 × 363,530,380.89
  4. Step 4: Simplify right side
    631,506,347.79x = 316,773,810,177,483,200
  5. Step 5: Solve for x
    x = 316,773,810,177,483,200/631,506,347.79
  6. Step 6: Final answer
    x = 501,616,193.23

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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.