Home / 515,682.04-711,646.68-286,243.60

Finding the Fourth Proportional to 515,682.04, 711,646.68 and 286,243.60

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Solution

The fourth proportional to 515,682.04, 711,646.68 and 286,243.60 is: 395,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,682.04 : 711,646.68 = 286,243.60 : x
  2. Step 2: Convert to fraction form
    515,682.04/711,646.68 = 286,243.60/x
  3. Step 3: Cross multiply
    515,682.04x = 711,646.68 × 286,243.60
  4. Step 4: Simplify right side
    515,682.04x = 203,704,307,611.25
  5. Step 5: Solve for x
    x = 203,704,307,611.25/515,682.04
  6. Step 6: Final answer
    x = 395,019.20

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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.