Home / 646,985.10-970,506.45-220,514.70

Finding the Fourth Proportional to 646,985.10, 970,506.45 and 220,514.70

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Solution

The fourth proportional to 646,985.10, 970,506.45 and 220,514.70 is: 330,781.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,985.10 : 970,506.45 = 220,514.70 : x
  2. Step 2: Convert to fraction form
    646,985.10/970,506.45 = 220,514.70/x
  3. Step 3: Cross multiply
    646,985.10x = 970,506.45 × 220,514.70
  4. Step 4: Simplify right side
    646,985.10x = 214,010,938,669.82
  5. Step 5: Solve for x
    x = 214,010,938,669.82/646,985.10
  6. Step 6: Final answer
    x = 330,781.87

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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.