Home / 8,507,077.60-12,769,947.60-5,315,807.20

Finding the Fourth Proportional to 8,507,077.60, 12,769,947.60 and 5,315,807.20

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Solution

The fourth proportional to 8,507,077.60, 12,769,947.60 and 5,315,807.20 is: 7,979,541.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,507,077.60 : 12,769,947.60 = 5,315,807.20 : x
  2. Step 2: Convert to fraction form
    8,507,077.60/12,769,947.60 = 5,315,807.20/x
  3. Step 3: Cross multiply
    8,507,077.60x = 12,769,947.60 × 5,315,807.20
  4. Step 4: Simplify right side
    8,507,077.60x = 67,882,579,395,702.72
  5. Step 5: Solve for x
    x = 67,882,579,395,702.72/8,507,077.60
  6. Step 6: Final answer
    x = 7,979,541.58

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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.