Home / 808,221.80-1,212,332.70-528,055.40

Finding the Fourth Proportional to 808,221.80, 1,212,332.70 and 528,055.40

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Solution

The fourth proportional to 808,221.80, 1,212,332.70 and 528,055.40 is: 792,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,221.80 : 1,212,332.70 = 528,055.40 : x
  2. Step 2: Convert to fraction form
    808,221.80/1,212,332.70 = 528,055.40/x
  3. Step 3: Cross multiply
    808,221.80x = 1,212,332.70 × 528,055.40
  4. Step 4: Simplify right side
    808,221.80x = 640,178,828,831.58
  5. Step 5: Solve for x
    x = 640,178,828,831.58/808,221.80
  6. Step 6: Final answer
    x = 792,083.10

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Double scale
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Similar ratio
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1.5x scale

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.