Home / 1,118,809.80-1,678,870.80-408,909.60

Finding the Fourth Proportional to 1,118,809.80, 1,678,870.80 and 408,909.60

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Solution

The fourth proportional to 1,118,809.80, 1,678,870.80 and 408,909.60 is: 613,604.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,809.80 : 1,678,870.80 = 408,909.60 : x
  2. Step 2: Convert to fraction form
    1,118,809.80/1,678,870.80 = 408,909.60/x
  3. Step 3: Cross multiply
    1,118,809.80x = 1,678,870.80 × 408,909.60
  4. Step 4: Simplify right side
    1,118,809.80x = 686,506,387,279.68
  5. Step 5: Solve for x
    x = 686,506,387,279.68/1,118,809.80
  6. Step 6: Final answer
    x = 613,604.20

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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.