Home / 687,117.78-1,030,178.34-461,919.60

Finding the Fourth Proportional to 687,117.78, 1,030,178.34 and 461,919.60

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Solution

The fourth proportional to 687,117.78, 1,030,178.34 and 461,919.60 is: 692,544.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,117.78 : 1,030,178.34 = 461,919.60 : x
  2. Step 2: Convert to fraction form
    687,117.78/1,030,178.34 = 461,919.60/x
  3. Step 3: Cross multiply
    687,117.78x = 1,030,178.34 × 461,919.60
  4. Step 4: Simplify right side
    687,117.78x = 475,859,566,741.46
  5. Step 5: Solve for x
    x = 475,859,566,741.46/687,117.78
  6. Step 6: Final answer
    x = 692,544.39

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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.