Home / 688,018.24-949,464.48-386,212.80

Finding the Fourth Proportional to 688,018.24, 949,464.48 and 386,212.80

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Solution

The fourth proportional to 688,018.24, 949,464.48 and 386,212.80 is: 532,973.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,018.24 : 949,464.48 = 386,212.80 : x
  2. Step 2: Convert to fraction form
    688,018.24/949,464.48 = 386,212.80/x
  3. Step 3: Cross multiply
    688,018.24x = 949,464.48 × 386,212.80
  4. Step 4: Simplify right side
    688,018.24x = 366,695,335,321.34
  5. Step 5: Solve for x
    x = 366,695,335,321.34/688,018.24
  6. Step 6: Final answer
    x = 532,973.28

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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.