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Finding the Fourth Proportional to 717,900.60, 990,709.38 and 395,622.26

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Solution

The fourth proportional to 717,900.60, 990,709.38 and 395,622.26 is: 545,962.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,900.60 : 990,709.38 = 395,622.26 : x
  2. Step 2: Convert to fraction form
    717,900.60/990,709.38 = 395,622.26/x
  3. Step 3: Cross multiply
    717,900.60x = 990,709.38 × 395,622.26
  4. Step 4: Simplify right side
    717,900.60x = 391,946,683,918.80
  5. Step 5: Solve for x
    x = 391,946,683,918.80/717,900.60
  6. Step 6: Final answer
    x = 545,962.33

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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.