Home / 7,727,128.80-10,662,904.32-4,289,099.20

Finding the Fourth Proportional to 7,727,128.80, 10,662,904.32 and 4,289,099.20

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Solution

The fourth proportional to 7,727,128.80, 10,662,904.32 and 4,289,099.20 is: 5,918,660.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,727,128.80 : 10,662,904.32 = 4,289,099.20 : x
  2. Step 2: Convert to fraction form
    7,727,128.80/10,662,904.32 = 4,289,099.20/x
  3. Step 3: Cross multiply
    7,727,128.80x = 10,662,904.32 × 4,289,099.20
  4. Step 4: Simplify right side
    7,727,128.80x = 45,734,254,388,588.55
  5. Step 5: Solve for x
    x = 45,734,254,388,588.55/7,727,128.80
  6. Step 6: Final answer
    x = 5,918,660.81

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1.5x scale

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.