Home / 717,981.52-990,769.98-395,673.62

Finding the Fourth Proportional to 717,981.52, 990,769.98 and 395,673.62

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Solution

The fourth proportional to 717,981.52, 990,769.98 and 395,673.62 is: 546,005.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,981.52 : 990,769.98 = 395,673.62 : x
  2. Step 2: Convert to fraction form
    717,981.52/990,769.98 = 395,673.62/x
  3. Step 3: Cross multiply
    717,981.52x = 990,769.98 × 395,673.62
  4. Step 4: Simplify right side
    717,981.52x = 392,021,544,573.93
  5. Step 5: Solve for x
    x = 392,021,544,573.93/717,981.52
  6. Step 6: Final answer
    x = 546,005.06

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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.