Home / 457,587.10-631,256.61-287,914.78

Finding the Fourth Proportional to 457,587.10, 631,256.61 and 287,914.78

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Solution

The fourth proportional to 457,587.10, 631,256.61 and 287,914.78 is: 397,188.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,587.10 : 631,256.61 = 287,914.78 : x
  2. Step 2: Convert to fraction form
    457,587.10/631,256.61 = 287,914.78/x
  3. Step 3: Cross multiply
    457,587.10x = 631,256.61 × 287,914.78
  4. Step 4: Simplify right side
    457,587.10x = 181,748,106,413.55
  5. Step 5: Solve for x
    x = 181,748,106,413.55/457,587.10
  6. Step 6: Final answer
    x = 397,188.01

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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.