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Finding the Fourth Proportional to 689,293.58, 951,084.30 and 402,758.30

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Solution

The fourth proportional to 689,293.58, 951,084.30 and 402,758.30 is: 555,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,293.58 : 951,084.30 = 402,758.30 : x
  2. Step 2: Convert to fraction form
    689,293.58/951,084.30 = 402,758.30/x
  3. Step 3: Cross multiply
    689,293.58x = 951,084.30 × 402,758.30
  4. Step 4: Simplify right side
    689,293.58x = 383,057,095,824.69
  5. Step 5: Solve for x
    x = 383,057,095,824.69/689,293.58
  6. Step 6: Final answer
    x = 555,724.16

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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.