Home / 738,531.80-1,107,129.45-513,999.80

Finding the Fourth Proportional to 738,531.80, 1,107,129.45 and 513,999.80

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Solution

The fourth proportional to 738,531.80, 1,107,129.45 and 513,999.80 is: 770,534.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,531.80 : 1,107,129.45 = 513,999.80 : x
  2. Step 2: Convert to fraction form
    738,531.80/1,107,129.45 = 513,999.80/x
  3. Step 3: Cross multiply
    738,531.80x = 1,107,129.45 × 513,999.80
  4. Step 4: Simplify right side
    738,531.80x = 569,064,315,874.11
  5. Step 5: Solve for x
    x = 569,064,315,874.11/738,531.80
  6. Step 6: Final answer
    x = 770,534.61

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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.