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Finding the Fourth Proportional to 404,235.60, 607,665.60 and 286,720.80

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Solution

The fourth proportional to 404,235.60, 607,665.60 and 286,720.80 is: 431,011.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,235.60 : 607,665.60 = 286,720.80 : x
  2. Step 2: Convert to fraction form
    404,235.60/607,665.60 = 286,720.80/x
  3. Step 3: Cross multiply
    404,235.60x = 607,665.60 × 286,720.80
  4. Step 4: Simplify right side
    404,235.60x = 174,230,366,964.48
  5. Step 5: Solve for x
    x = 174,230,366,964.48/404,235.60
  6. Step 6: Final answer
    x = 431,011.93

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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.