Home / 717,854.43-990,683.16-395,564.34

Finding the Fourth Proportional to 717,854.43, 990,683.16 and 395,564.34

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Solution

The fourth proportional to 717,854.43, 990,683.16 and 395,564.34 is: 545,903.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,854.43 : 990,683.16 = 395,564.34 : x
  2. Step 2: Convert to fraction form
    717,854.43/990,683.16 = 395,564.34/x
  3. Step 3: Cross multiply
    717,854.43x = 990,683.16 × 395,564.34
  4. Step 4: Simplify right side
    717,854.43x = 391,878,930,334.51
  5. Step 5: Solve for x
    x = 391,878,930,334.51/717,854.43
  6. Step 6: Final answer
    x = 545,903.06

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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.