Home / 926,411.20-1,278,470.40-518,509.60

Finding the Fourth Proportional to 926,411.20, 1,278,470.40 and 518,509.60

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Solution

The fourth proportional to 926,411.20, 1,278,470.40 and 518,509.60 is: 715,556.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,411.20 : 1,278,470.40 = 518,509.60 : x
  2. Step 2: Convert to fraction form
    926,411.20/1,278,470.40 = 518,509.60/x
  3. Step 3: Cross multiply
    926,411.20x = 1,278,470.40 × 518,509.60
  4. Step 4: Simplify right side
    926,411.20x = 662,899,175,715.84
  5. Step 5: Solve for x
    x = 662,899,175,715.84/926,411.20
  6. Step 6: Final answer
    x = 715,556.09

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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.