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Finding the Fourth Proportional to 807,136.80, 1,210,186.80 and 334,010.40

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Solution

The fourth proportional to 807,136.80, 1,210,186.80 and 334,010.40 is: 500,801.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,136.80 : 1,210,186.80 = 334,010.40 : x
  2. Step 2: Convert to fraction form
    807,136.80/1,210,186.80 = 334,010.40/x
  3. Step 3: Cross multiply
    807,136.80x = 1,210,186.80 × 334,010.40
  4. Step 4: Simplify right side
    807,136.80x = 404,214,977,142.72
  5. Step 5: Solve for x
    x = 404,214,977,142.72/807,136.80
  6. Step 6: Final answer
    x = 500,801.08

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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.