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Finding the Fourth Proportional to 541,572.86, 747,378.45 and 312,003.50

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Solution

The fourth proportional to 541,572.86, 747,378.45 and 312,003.50 is: 430,569.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,572.86 : 747,378.45 = 312,003.50 : x
  2. Step 2: Convert to fraction form
    541,572.86/747,378.45 = 312,003.50/x
  3. Step 3: Cross multiply
    541,572.86x = 747,378.45 × 312,003.50
  4. Step 4: Simplify right side
    541,572.86x = 233,184,692,224.58
  5. Step 5: Solve for x
    x = 233,184,692,224.58/541,572.86
  6. Step 6: Final answer
    x = 430,569.38

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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.