Home / 487,184,419.40-730,776,629.10-123,678,775.40

Finding the Fourth Proportional to 487,184,419.40, 730,776,629.10 and 123,678,775.40

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Solution

The fourth proportional to 487,184,419.40, 730,776,629.10 and 123,678,775.40 is: 185,518,163.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,184,419.40 : 730,776,629.10 = 123,678,775.40 : x
  2. Step 2: Convert to fraction form
    487,184,419.40/730,776,629.10 = 123,678,775.40/x
  3. Step 3: Cross multiply
    487,184,419.40x = 730,776,629.10 × 123,678,775.40
  4. Step 4: Simplify right side
    487,184,419.40x = 90,381,558,578,028,016
  5. Step 5: Solve for x
    x = 90,381,558,578,028,016/487,184,419.40
  6. Step 6: Final answer
    x = 185,518,163.10

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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.