Home / 642,551.42-886,436.12-370,554.23

Finding the Fourth Proportional to 642,551.42, 886,436.12 and 370,554.23

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Solution

The fourth proportional to 642,551.42, 886,436.12 and 370,554.23 is: 511,200.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,551.42 : 886,436.12 = 370,554.23 : x
  2. Step 2: Convert to fraction form
    642,551.42/886,436.12 = 370,554.23/x
  3. Step 3: Cross multiply
    642,551.42x = 886,436.12 × 370,554.23
  4. Step 4: Simplify right side
    642,551.42x = 328,472,653,890.79
  5. Step 5: Solve for x
    x = 328,472,653,890.79/642,551.42
  6. Step 6: Final answer
    x = 511,200.57

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Double scale
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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.