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Finding the Fourth Proportional to 628,383.36, 866,887.20 and 424,368

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Solution

The fourth proportional to 628,383.36, 866,887.20 and 424,368 is: 585,437.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,383.36 : 866,887.20 = 424,368 : x
  2. Step 2: Convert to fraction form
    628,383.36/866,887.20 = 424,368/x
  3. Step 3: Cross multiply
    628,383.36x = 866,887.20 × 424,368
  4. Step 4: Simplify right side
    628,383.36x = 367,879,187,289.60
  5. Step 5: Solve for x
    x = 367,879,187,289.60/628,383.36
  6. Step 6: Final answer
    x = 585,437.51

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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.