Home / 808,619.60-1,212,929.40-717,640.40

Finding the Fourth Proportional to 808,619.60, 1,212,929.40 and 717,640.40

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Solution

The fourth proportional to 808,619.60, 1,212,929.40 and 717,640.40 is: 1,076,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,619.60 : 1,212,929.40 = 717,640.40 : x
  2. Step 2: Convert to fraction form
    808,619.60/1,212,929.40 = 717,640.40/x
  3. Step 3: Cross multiply
    808,619.60x = 1,212,929.40 × 717,640.40
  4. Step 4: Simplify right side
    808,619.60x = 870,447,139,787.76
  5. Step 5: Solve for x
    x = 870,447,139,787.76/808,619.60
  6. Step 6: Final answer
    x = 1,076,460.60

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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.