Home / 738,305.80-1,107,130.65-288,877.30

Finding the Fourth Proportional to 738,305.80, 1,107,130.65 and 288,877.30

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Solution

The fourth proportional to 738,305.80, 1,107,130.65 and 288,877.30 is: 433,187.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,305.80 : 1,107,130.65 = 288,877.30 : x
  2. Step 2: Convert to fraction form
    738,305.80/1,107,130.65 = 288,877.30/x
  3. Step 3: Cross multiply
    738,305.80x = 1,107,130.65 × 288,877.30
  4. Step 4: Simplify right side
    738,305.80x = 319,824,912,919.25
  5. Step 5: Solve for x
    x = 319,824,912,919.25/738,305.80
  6. Step 6: Final answer
    x = 433,187.59

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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.