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Finding the Fourth Proportional to 642,312.48, 886,485.57 and 370,327.14

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Solution

The fourth proportional to 642,312.48, 886,485.57 and 370,327.14 is: 511,105.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,312.48 : 886,485.57 = 370,327.14 : x
  2. Step 2: Convert to fraction form
    642,312.48/886,485.57 = 370,327.14/x
  3. Step 3: Cross multiply
    642,312.48x = 886,485.57 × 370,327.14
  4. Step 4: Simplify right side
    642,312.48x = 328,289,664,400.64
  5. Step 5: Solve for x
    x = 328,289,664,400.64/642,312.48
  6. Step 6: Final answer
    x = 511,105.84

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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.