Home / 810,909.30-1,118,969.10-448,274.70

Finding the Fourth Proportional to 810,909.30, 1,118,969.10 and 448,274.70

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Solution

The fourth proportional to 810,909.30, 1,118,969.10 and 448,274.70 is: 618,571.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,909.30 : 1,118,969.10 = 448,274.70 : x
  2. Step 2: Convert to fraction form
    810,909.30/1,118,969.10 = 448,274.70/x
  3. Step 3: Cross multiply
    810,909.30x = 1,118,969.10 × 448,274.70
  4. Step 4: Simplify right side
    810,909.30x = 501,605,537,611.77
  5. Step 5: Solve for x
    x = 501,605,537,611.77/810,909.30
  6. Step 6: Final answer
    x = 618,571.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.