Home / 1,209,218.40-1,813,827.60-411,400.80

Finding the Fourth Proportional to 1,209,218.40, 1,813,827.60 and 411,400.80

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Solution

The fourth proportional to 1,209,218.40, 1,813,827.60 and 411,400.80 is: 617,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,218.40 : 1,813,827.60 = 411,400.80 : x
  2. Step 2: Convert to fraction form
    1,209,218.40/1,813,827.60 = 411,400.80/x
  3. Step 3: Cross multiply
    1,209,218.40x = 1,813,827.60 × 411,400.80
  4. Step 4: Simplify right side
    1,209,218.40x = 746,210,125,702.08
  5. Step 5: Solve for x
    x = 746,210,125,702.08/1,209,218.40
  6. Step 6: Final answer
    x = 617,101.20

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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.