Home / 786,272.62-1,084,795.20-640,828.31

Finding the Fourth Proportional to 786,272.62, 1,084,795.20 and 640,828.31

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Solution

The fourth proportional to 786,272.62, 1,084,795.20 and 640,828.31 is: 884,130.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,272.62 : 1,084,795.20 = 640,828.31 : x
  2. Step 2: Convert to fraction form
    786,272.62/1,084,795.20 = 640,828.31/x
  3. Step 3: Cross multiply
    786,272.62x = 1,084,795.20 × 640,828.31
  4. Step 4: Simplify right side
    786,272.62x = 695,167,474,712.11
  5. Step 5: Solve for x
    x = 695,167,474,712.11/786,272.62
  6. Step 6: Final answer
    x = 884,130.34

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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.