Home / 7,419,155.40-11,128,733.10-6,686,947.80

Finding the Fourth Proportional to 7,419,155.40, 11,128,733.10 and 6,686,947.80

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Solution

The fourth proportional to 7,419,155.40, 11,128,733.10 and 6,686,947.80 is: 10,030,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419,155.40 : 11,128,733.10 = 6,686,947.80 : x
  2. Step 2: Convert to fraction form
    7,419,155.40/11,128,733.10 = 6,686,947.80/x
  3. Step 3: Cross multiply
    7,419,155.40x = 11,128,733.10 × 6,686,947.80
  4. Step 4: Simplify right side
    7,419,155.40x = 74,417,257,319,832.17
  5. Step 5: Solve for x
    x = 74,417,257,319,832.17/7,419,155.40
  6. Step 6: Final answer
    x = 10,030,421.70

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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.