Home / 856,913.14-1,285,549.53-257,918.14

Finding the Fourth Proportional to 856,913.14, 1,285,549.53 and 257,918.14

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Solution

The fourth proportional to 856,913.14, 1,285,549.53 and 257,918.14 is: 386,931.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,913.14 : 1,285,549.53 = 257,918.14 : x
  2. Step 2: Convert to fraction form
    856,913.14/1,285,549.53 = 257,918.14/x
  3. Step 3: Cross multiply
    856,913.14x = 1,285,549.53 × 257,918.14
  4. Step 4: Simplify right side
    856,913.14x = 331,566,543,655.47
  5. Step 5: Solve for x
    x = 331,566,543,655.47/856,913.14
  6. Step 6: Final answer
    x = 386,931.33

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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.