Home / 515,222.10-710,981.35-285,759.06

Finding the Fourth Proportional to 515,222.10, 710,981.35 and 285,759.06

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Solution

The fourth proportional to 515,222.10, 710,981.35 and 285,759.06 is: 394,333.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,222.10 : 710,981.35 = 285,759.06 : x
  2. Step 2: Convert to fraction form
    515,222.10/710,981.35 = 285,759.06/x
  3. Step 3: Cross multiply
    515,222.10x = 710,981.35 × 285,759.06
  4. Step 4: Simplify right side
    515,222.10x = 203,169,358,872.95
  5. Step 5: Solve for x
    x = 203,169,358,872.95/515,222.10
  6. Step 6: Final answer
    x = 394,333.55

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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.