Home / 660,669.62-991,152.09-211,417.47

Finding the Fourth Proportional to 660,669.62, 991,152.09 and 211,417.47

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Solution

The fourth proportional to 660,669.62, 991,152.09 and 211,417.47 is: 317,173.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,669.62 : 991,152.09 = 211,417.47 : x
  2. Step 2: Convert to fraction form
    660,669.62/991,152.09 = 211,417.47/x
  3. Step 3: Cross multiply
    660,669.62x = 991,152.09 × 211,417.47
  4. Step 4: Simplify right side
    660,669.62x = 209,546,867,253.01
  5. Step 5: Solve for x
    x = 209,546,867,253.01/660,669.62
  6. Step 6: Final answer
    x = 317,173.46

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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.