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Finding the Fourth Proportional to 849,287, 1,274,127.34 and 288,321.50

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Solution

The fourth proportional to 849,287, 1,274,127.34 and 288,321.50 is: 432,549.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,287 : 1,274,127.34 = 288,321.50 : x
  2. Step 2: Convert to fraction form
    849,287/1,274,127.34 = 288,321.50/x
  3. Step 3: Cross multiply
    849,287x = 1,274,127.34 × 288,321.50
  4. Step 4: Simplify right side
    849,287x = 367,358,305,859.81
  5. Step 5: Solve for x
    x = 367,358,305,859.81/849,287
  6. Step 6: Final answer
    x = 432,549.07

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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.