Home / 1,220,698-1,684,583.49-676,856.71

Finding the Fourth Proportional to 1,220,698, 1,684,583.49 and 676,856.71

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Solution

The fourth proportional to 1,220,698, 1,684,583.49 and 676,856.71 is: 934,073.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,698 : 1,684,583.49 = 676,856.71 : x
  2. Step 2: Convert to fraction form
    1,220,698/1,684,583.49 = 676,856.71/x
  3. Step 3: Cross multiply
    1,220,698x = 1,684,583.49 × 676,856.71
  4. Step 4: Simplify right side
    1,220,698x = 1,140,221,638,761.72
  5. Step 5: Solve for x
    x = 1,140,221,638,761.72/1,220,698
  6. Step 6: Final answer
    x = 934,073.49

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Double scale
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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.