Home / 816,145.20-1,224,217.80-666,554.40

Finding the Fourth Proportional to 816,145.20, 1,224,217.80 and 666,554.40

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Solution

The fourth proportional to 816,145.20, 1,224,217.80 and 666,554.40 is: 999,831.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,145.20 : 1,224,217.80 = 666,554.40 : x
  2. Step 2: Convert to fraction form
    816,145.20/1,224,217.80 = 666,554.40/x
  3. Step 3: Cross multiply
    816,145.20x = 1,224,217.80 × 666,554.40
  4. Step 4: Simplify right side
    816,145.20x = 816,007,761,148.32
  5. Step 5: Solve for x
    x = 816,007,761,148.32/816,145.20
  6. Step 6: Final answer
    x = 999,831.60

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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.