Home / 12,878,538.40-19,320,140.40-6,472,669.60

Finding the Fourth Proportional to 12,878,538.40, 19,320,140.40 and 6,472,669.60

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Solution

The fourth proportional to 12,878,538.40, 19,320,140.40 and 6,472,669.60 is: 9,710,176.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878,538.40 : 19,320,140.40 = 6,472,669.60 : x
  2. Step 2: Convert to fraction form
    12,878,538.40/19,320,140.40 = 6,472,669.60/x
  3. Step 3: Cross multiply
    12,878,538.40x = 19,320,140.40 × 6,472,669.60
  4. Step 4: Simplify right side
    12,878,538.40x = 125,052,885,434,811.83
  5. Step 5: Solve for x
    x = 125,052,885,434,811.83/12,878,538.40
  6. Step 6: Final answer
    x = 9,710,176.85

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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.