Home / 8,487,632.20-12,731,448.30-5,128,400.20

Finding the Fourth Proportional to 8,487,632.20, 12,731,448.30 and 5,128,400.20

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Solution

The fourth proportional to 8,487,632.20, 12,731,448.30 and 5,128,400.20 is: 7,692,600.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487,632.20 : 12,731,448.30 = 5,128,400.20 : x
  2. Step 2: Convert to fraction form
    8,487,632.20/12,731,448.30 = 5,128,400.20/x
  3. Step 3: Cross multiply
    8,487,632.20x = 12,731,448.30 × 5,128,400.20
  4. Step 4: Simplify right side
    8,487,632.20x = 65,291,962,008,009.66
  5. Step 5: Solve for x
    x = 65,291,962,008,009.66/8,487,632.20
  6. Step 6: Final answer
    x = 7,692,600.30

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1.5x scale

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.