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Finding the Fourth Proportional to 632,009.18, 872,172.50 and 345,529.20

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Solution

The fourth proportional to 632,009.18, 872,172.50 and 345,529.20 is: 476,830.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,009.18 : 872,172.50 = 345,529.20 : x
  2. Step 2: Convert to fraction form
    632,009.18/872,172.50 = 345,529.20/x
  3. Step 3: Cross multiply
    632,009.18x = 872,172.50 × 345,529.20
  4. Step 4: Simplify right side
    632,009.18x = 301,361,066,187
  5. Step 5: Solve for x
    x = 301,361,066,187/632,009.18
  6. Step 6: Final answer
    x = 476,830.20

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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.