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Finding the Fourth Proportional to 654,328.80, 981,525.60 and 339,400.80

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Solution

The fourth proportional to 654,328.80, 981,525.60 and 339,400.80 is: 509,118.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,328.80 : 981,525.60 = 339,400.80 : x
  2. Step 2: Convert to fraction form
    654,328.80/981,525.60 = 339,400.80/x
  3. Step 3: Cross multiply
    654,328.80x = 981,525.60 × 339,400.80
  4. Step 4: Simplify right side
    654,328.80x = 333,130,573,860.48
  5. Step 5: Solve for x
    x = 333,130,573,860.48/654,328.80
  6. Step 6: Final answer
    x = 509,118.01

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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.