Home / 860,256.40-1,289,218.20-575,136.40

Finding the Fourth Proportional to 860,256.40, 1,289,218.20 and 575,136.40

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Solution

The fourth proportional to 860,256.40, 1,289,218.20 and 575,136.40 is: 861,924.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,256.40 : 1,289,218.20 = 575,136.40 : x
  2. Step 2: Convert to fraction form
    860,256.40/1,289,218.20 = 575,136.40/x
  3. Step 3: Cross multiply
    860,256.40x = 1,289,218.20 × 575,136.40
  4. Step 4: Simplify right side
    860,256.40x = 741,476,314,362.48
  5. Step 5: Solve for x
    x = 741,476,314,362.48/860,256.40
  6. Step 6: Final answer
    x = 861,924.79

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Double scale
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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.