Home / 407,784.68-562,515.90-378,918.71

Finding the Fourth Proportional to 407,784.68, 562,515.90 and 378,918.71

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Solution

The fourth proportional to 407,784.68, 562,515.90 and 378,918.71 is: 522,696.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,784.68 : 562,515.90 = 378,918.71 : x
  2. Step 2: Convert to fraction form
    407,784.68/562,515.90 = 378,918.71/x
  3. Step 3: Cross multiply
    407,784.68x = 562,515.90 × 378,918.71
  4. Step 4: Simplify right side
    407,784.68x = 213,147,798,938.34
  5. Step 5: Solve for x
    x = 213,147,798,938.34/407,784.68
  6. Step 6: Final answer
    x = 522,696.92

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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.