Home / 808,721.60-1,211,332.80-525,286.40

Finding the Fourth Proportional to 808,721.60, 1,211,332.80 and 525,286.40

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Solution

The fourth proportional to 808,721.60, 1,211,332.80 and 525,286.40 is: 786,793.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,721.60 : 1,211,332.80 = 525,286.40 : x
  2. Step 2: Convert to fraction form
    808,721.60/1,211,332.80 = 525,286.40/x
  3. Step 3: Cross multiply
    808,721.60x = 1,211,332.80 × 525,286.40
  4. Step 4: Simplify right side
    808,721.60x = 636,296,645,713.92
  5. Step 5: Solve for x
    x = 636,296,645,713.92/808,721.60
  6. Step 6: Final answer
    x = 786,793.19

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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.