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Finding the Fourth Proportional to 633,999.07, 873,448.27 and 442,709.47

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Solution

The fourth proportional to 633,999.07, 873,448.27 and 442,709.47 is: 609,912.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,999.07 : 873,448.27 = 442,709.47 : x
  2. Step 2: Convert to fraction form
    633,999.07/873,448.27 = 442,709.47/x
  3. Step 3: Cross multiply
    633,999.07x = 873,448.27 × 442,709.47
  4. Step 4: Simplify right side
    633,999.07x = 386,683,820,684.12
  5. Step 5: Solve for x
    x = 386,683,820,684.12/633,999.07
  6. Step 6: Final answer
    x = 609,912.28

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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.