Home / 756,985.80-1,135,478.70-307,557.30

Finding the Fourth Proportional to 756,985.80, 1,135,478.70 and 307,557.30

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Solution

The fourth proportional to 756,985.80, 1,135,478.70 and 307,557.30 is: 461,335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,985.80 : 1,135,478.70 = 307,557.30 : x
  2. Step 2: Convert to fraction form
    756,985.80/1,135,478.70 = 307,557.30/x
  3. Step 3: Cross multiply
    756,985.80x = 1,135,478.70 × 307,557.30
  4. Step 4: Simplify right side
    756,985.80x = 349,224,763,179.51
  5. Step 5: Solve for x
    x = 349,224,763,179.51/756,985.80
  6. Step 6: Final answer
    x = 461,335.95

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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.