Home / 918,110.21-1,265,656.77-641,609.62

Finding the Fourth Proportional to 918,110.21, 1,265,656.77 and 641,609.62

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Solution

The fourth proportional to 918,110.21, 1,265,656.77 and 641,609.62 is: 884,488.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,110.21 : 1,265,656.77 = 641,609.62 : x
  2. Step 2: Convert to fraction form
    918,110.21/1,265,656.77 = 641,609.62/x
  3. Step 3: Cross multiply
    918,110.21x = 1,265,656.77 × 641,609.62
  4. Step 4: Simplify right side
    918,110.21x = 812,057,556,085.99
  5. Step 5: Solve for x
    x = 812,057,556,085.99/918,110.21
  6. Step 6: Final answer
    x = 884,488.11

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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.