Home / 767,857.80-1,151,786.70-368,430.60

Finding the Fourth Proportional to 767,857.80, 1,151,786.70 and 368,430.60

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Solution

The fourth proportional to 767,857.80, 1,151,786.70 and 368,430.60 is: 552,645.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,857.80 : 1,151,786.70 = 368,430.60 : x
  2. Step 2: Convert to fraction form
    767,857.80/1,151,786.70 = 368,430.60/x
  3. Step 3: Cross multiply
    767,857.80x = 1,151,786.70 × 368,430.60
  4. Step 4: Simplify right side
    767,857.80x = 424,353,464,953.02
  5. Step 5: Solve for x
    x = 424,353,464,953.02/767,857.80
  6. Step 6: Final answer
    x = 552,645.90

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.