Home / 819,772.72-1,131,292.56-457,220.32

Finding the Fourth Proportional to 819,772.72, 1,131,292.56 and 457,220.32

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Solution

The fourth proportional to 819,772.72, 1,131,292.56 and 457,220.32 is: 630,967.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,772.72 : 1,131,292.56 = 457,220.32 : x
  2. Step 2: Convert to fraction form
    819,772.72/1,131,292.56 = 457,220.32/x
  3. Step 3: Cross multiply
    819,772.72x = 1,131,292.56 × 457,220.32
  4. Step 4: Simplify right side
    819,772.72x = 517,249,946,296.82
  5. Step 5: Solve for x
    x = 517,249,946,296.82/819,772.72
  6. Step 6: Final answer
    x = 630,967.50

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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.