Home / 911,019.40-1,257,208.90-503,113.80

Finding the Fourth Proportional to 911,019.40, 1,257,208.90 and 503,113.80

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Solution

The fourth proportional to 911,019.40, 1,257,208.90 and 503,113.80 is: 694,298.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,019.40 : 1,257,208.90 = 503,113.80 : x
  2. Step 2: Convert to fraction form
    911,019.40/1,257,208.90 = 503,113.80/x
  3. Step 3: Cross multiply
    911,019.40x = 1,257,208.90 × 503,113.80
  4. Step 4: Simplify right side
    911,019.40x = 632,519,147,072.82
  5. Step 5: Solve for x
    x = 632,519,147,072.82/911,019.40
  6. Step 6: Final answer
    x = 694,298.22

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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.