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Finding the Fourth Proportional to 671,219.84, 926,289.92 and 369,420.80

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Solution

The fourth proportional to 671,219.84, 926,289.92 and 369,420.80 is: 509,804.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,219.84 : 926,289.92 = 369,420.80 : x
  2. Step 2: Convert to fraction form
    671,219.84/926,289.92 = 369,420.80/x
  3. Step 3: Cross multiply
    671,219.84x = 926,289.92 × 369,420.80
  4. Step 4: Simplify right side
    671,219.84x = 342,190,763,278.34
  5. Step 5: Solve for x
    x = 342,190,763,278.34/671,219.84
  6. Step 6: Final answer
    x = 509,804.30

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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.