Home / 641,669.61-962,172.16-342,069.72

Finding the Fourth Proportional to 641,669.61, 962,172.16 and 342,069.72

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Solution

The fourth proportional to 641,669.61, 962,172.16 and 342,069.72 is: 512,927.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,669.61 : 962,172.16 = 342,069.72 : x
  2. Step 2: Convert to fraction form
    641,669.61/962,172.16 = 342,069.72/x
  3. Step 3: Cross multiply
    641,669.61x = 962,172.16 × 342,069.72
  4. Step 4: Simplify right side
    641,669.61x = 329,129,961,363.00
  5. Step 5: Solve for x
    x = 329,129,961,363.00/641,669.61
  6. Step 6: Final answer
    x = 512,927.46

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1.5x scale

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.