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Finding the Fourth Proportional to 819,151.30, 1,130,409.48 and 475,048.72

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Solution

The fourth proportional to 819,151.30, 1,130,409.48 and 475,048.72 is: 655,556.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,151.30 : 1,130,409.48 = 475,048.72 : x
  2. Step 2: Convert to fraction form
    819,151.30/1,130,409.48 = 475,048.72/x
  3. Step 3: Cross multiply
    819,151.30x = 1,130,409.48 × 475,048.72
  4. Step 4: Simplify right side
    819,151.30x = 536,999,576,549.87
  5. Step 5: Solve for x
    x = 536,999,576,549.87/819,151.30
  6. Step 6: Final answer
    x = 655,556.03

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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.