Home / 692,921.79-1,039,385.09-213,146.35

Finding the Fourth Proportional to 692,921.79, 1,039,385.09 and 213,146.35

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Solution

The fourth proportional to 692,921.79, 1,039,385.09 and 213,146.35 is: 319,720.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,921.79 : 1,039,385.09 = 213,146.35 : x
  2. Step 2: Convert to fraction form
    692,921.79/1,039,385.09 = 213,146.35/x
  3. Step 3: Cross multiply
    692,921.79x = 1,039,385.09 × 213,146.35
  4. Step 4: Simplify right side
    692,921.79x = 221,541,136,112.33
  5. Step 5: Solve for x
    x = 221,541,136,112.33/692,921.79
  6. Step 6: Final answer
    x = 319,720.26

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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.