Home / 640,522.98-960,458.04-213,905.34

Finding the Fourth Proportional to 640,522.98, 960,458.04 and 213,905.34

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Solution

The fourth proportional to 640,522.98, 960,458.04 and 213,905.34 is: 320,749.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,522.98 : 960,458.04 = 213,905.34 : x
  2. Step 2: Convert to fraction form
    640,522.98/960,458.04 = 213,905.34/x
  3. Step 3: Cross multiply
    640,522.98x = 960,458.04 × 213,905.34
  4. Step 4: Simplify right side
    640,522.98x = 205,447,103,601.93
  5. Step 5: Solve for x
    x = 205,447,103,601.93/640,522.98
  6. Step 6: Final answer
    x = 320,749.00

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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.