Home / 642,657.12-886,664.16-370,688.56

Finding the Fourth Proportional to 642,657.12, 886,664.16 and 370,688.56

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Solution

The fourth proportional to 642,657.12, 886,664.16 and 370,688.56 is: 511,433.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,657.12 : 886,664.16 = 370,688.56 : x
  2. Step 2: Convert to fraction form
    642,657.12/886,664.16 = 370,688.56/x
  3. Step 3: Cross multiply
    642,657.12x = 886,664.16 × 370,688.56
  4. Step 4: Simplify right side
    642,657.12x = 328,676,260,674.01
  5. Step 5: Solve for x
    x = 328,676,260,674.01/642,657.12
  6. Step 6: Final answer
    x = 511,433.31

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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.