Home / 642,280.98-886,442.15-370,295.72

Finding the Fourth Proportional to 642,280.98, 886,442.15 and 370,295.72

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Solution

The fourth proportional to 642,280.98, 886,442.15 and 370,295.72 is: 511,062.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,280.98 : 886,442.15 = 370,295.72 : x
  2. Step 2: Convert to fraction form
    642,280.98/886,442.15 = 370,295.72/x
  3. Step 3: Cross multiply
    642,280.98x = 886,442.15 × 370,295.72
  4. Step 4: Simplify right side
    642,280.98x = 328,245,727,888.91
  5. Step 5: Solve for x
    x = 328,245,727,888.91/642,280.98
  6. Step 6: Final answer
    x = 511,062.51

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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.