Home / 1,198,119,781.90-1,653,569,548.52-689,472,041.72

Finding the Fourth Proportional to 1,198,119,781.90, 1,653,569,548.52 and 689,472,041.72

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Solution

The fourth proportional to 1,198,119,781.90, 1,653,569,548.52 and 689,472,041.72 is: 951,565,936.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198,119,781.90 : 1,653,569,548.52 = 689,472,041.72 : x
  2. Step 2: Convert to fraction form
    1,198,119,781.90/1,653,569,548.52 = 689,472,041.72/x
  3. Step 3: Cross multiply
    1,198,119,781.90x = 1,653,569,548.52 × 689,472,041.72
  4. Step 4: Simplify right side
    1,198,119,781.90x = 1,140,089,972,736,248,960
  5. Step 5: Solve for x
    x = 1,140,089,972,736,248,960/1,198,119,781.90
  6. Step 6: Final answer
    x = 951,565,936.87

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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.