Home / 427,436.04-640,311.51-347,564.16

Finding the Fourth Proportional to 427,436.04, 640,311.51 and 347,564.16

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Solution

The fourth proportional to 427,436.04, 640,311.51 and 347,564.16 is: 520,661.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,436.04 : 640,311.51 = 347,564.16 : x
  2. Step 2: Convert to fraction form
    427,436.04/640,311.51 = 347,564.16/x
  3. Step 3: Cross multiply
    427,436.04x = 640,311.51 × 347,564.16
  4. Step 4: Simplify right side
    427,436.04x = 222,549,332,111.48
  5. Step 5: Solve for x
    x = 222,549,332,111.48/427,436.04
  6. Step 6: Final answer
    x = 520,661.13

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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.