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Finding the Fourth Proportional to 621,993.10, 933,973.80 and 472,402.30

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Solution

The fourth proportional to 621,993.10, 933,973.80 and 472,402.30 is: 709,350.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,993.10 : 933,973.80 = 472,402.30 : x
  2. Step 2: Convert to fraction form
    621,993.10/933,973.80 = 472,402.30/x
  3. Step 3: Cross multiply
    621,993.10x = 933,973.80 × 472,402.30
  4. Step 4: Simplify right side
    621,993.10x = 441,211,371,259.74
  5. Step 5: Solve for x
    x = 441,211,371,259.74/621,993.10
  6. Step 6: Final answer
    x = 709,350.91

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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.