Home / 786,272.12-1,084,794.51-640,827.81

Finding the Fourth Proportional to 786,272.12, 1,084,794.51 and 640,827.81

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Solution

The fourth proportional to 786,272.12, 1,084,794.51 and 640,827.81 is: 884,129.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,272.12 : 1,084,794.51 = 640,827.81 : x
  2. Step 2: Convert to fraction form
    786,272.12/1,084,794.51 = 640,827.81/x
  3. Step 3: Cross multiply
    786,272.12x = 1,084,794.51 × 640,827.81
  4. Step 4: Simplify right side
    786,272.12x = 695,166,490,143.32
  5. Step 5: Solve for x
    x = 695,166,490,143.32/786,272.12
  6. Step 6: Final answer
    x = 884,129.65

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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.