Home / 642,531.49-886,698.74-356,056.36

Finding the Fourth Proportional to 642,531.49, 886,698.74 and 356,056.36

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Solution

The fourth proportional to 642,531.49, 886,698.74 and 356,056.36 is: 491,360.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,531.49 : 886,698.74 = 356,056.36 : x
  2. Step 2: Convert to fraction form
    642,531.49/886,698.74 = 356,056.36/x
  3. Step 3: Cross multiply
    642,531.49x = 886,698.74 × 356,056.36
  4. Step 4: Simplify right side
    642,531.49x = 315,714,725,780.99
  5. Step 5: Solve for x
    x = 315,714,725,780.99/642,531.49
  6. Step 6: Final answer
    x = 491,360.70

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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.