Home / 1,273,205.98-1,909,403.85-420,118.60

Finding the Fourth Proportional to 1,273,205.98, 1,909,403.85 and 420,118.60

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Solution

The fourth proportional to 1,273,205.98, 1,909,403.85 and 420,118.60 is: 630,044.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,205.98 : 1,909,403.85 = 420,118.60 : x
  2. Step 2: Convert to fraction form
    1,273,205.98/1,909,403.85 = 420,118.60/x
  3. Step 3: Cross multiply
    1,273,205.98x = 1,909,403.85 × 420,118.60
  4. Step 4: Simplify right side
    1,273,205.98x = 802,176,072,296.61
  5. Step 5: Solve for x
    x = 802,176,072,296.61/1,273,205.98
  6. Step 6: Final answer
    x = 630,044.22

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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.