Home / 521,259,913.12-781,889,182.80-133,082,809.60

Finding the Fourth Proportional to 521,259,913.12, 781,889,182.80 and 133,082,809.60

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Solution

The fourth proportional to 521,259,913.12, 781,889,182.80 and 133,082,809.60 is: 199,624,039.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,259,913.12 : 781,889,182.80 = 133,082,809.60 : x
  2. Step 2: Convert to fraction form
    521,259,913.12/781,889,182.80 = 133,082,809.60/x
  3. Step 3: Cross multiply
    521,259,913.12x = 781,889,182.80 × 133,082,809.60
  4. Step 4: Simplify right side
    521,259,913.12x = 104,056,009,242,871,984
  5. Step 5: Solve for x
    x = 104,056,009,242,871,984/521,259,913.12
  6. Step 6: Final answer
    x = 199,624,039.03

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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.