Home / 689,442.88-951,111.84-402,975.04

Finding the Fourth Proportional to 689,442.88, 951,111.84 and 402,975.04

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Solution

The fourth proportional to 689,442.88, 951,111.84 and 402,975.04 is: 555,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,442.88 : 951,111.84 = 402,975.04 : x
  2. Step 2: Convert to fraction form
    689,442.88/951,111.84 = 402,975.04/x
  3. Step 3: Cross multiply
    689,442.88x = 951,111.84 × 402,975.04
  4. Step 4: Simplify right side
    689,442.88x = 383,274,331,768.47
  5. Step 5: Solve for x
    x = 383,274,331,768.47/689,442.88
  6. Step 6: Final answer
    x = 555,918.91

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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.