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Finding the Fourth Proportional to 404,407.80, 606,611.70 and 358,918.20

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Solution

The fourth proportional to 404,407.80, 606,611.70 and 358,918.20 is: 538,377.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,407.80 : 606,611.70 = 358,918.20 : x
  2. Step 2: Convert to fraction form
    404,407.80/606,611.70 = 358,918.20/x
  3. Step 3: Cross multiply
    404,407.80x = 606,611.70 × 358,918.20
  4. Step 4: Simplify right side
    404,407.80x = 217,723,979,462.94
  5. Step 5: Solve for x
    x = 217,723,979,462.94/404,407.80
  6. Step 6: Final answer
    x = 538,377.30

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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.