Home / 717,815.33-990,549.36-395,473.40

Finding the Fourth Proportional to 717,815.33, 990,549.36 and 395,473.40

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Solution

The fourth proportional to 717,815.33, 990,549.36 and 395,473.40 is: 545,733.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,815.33 : 990,549.36 = 395,473.40 : x
  2. Step 2: Convert to fraction form
    717,815.33/990,549.36 = 395,473.40/x
  3. Step 3: Cross multiply
    717,815.33x = 990,549.36 × 395,473.40
  4. Step 4: Simplify right side
    717,815.33x = 391,735,918,314.28
  5. Step 5: Solve for x
    x = 391,735,918,314.28/717,815.33
  6. Step 6: Final answer
    x = 545,733.57

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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.