Home / 1,226,857.20-1,840,285.80-385,407.60

Finding the Fourth Proportional to 1,226,857.20, 1,840,285.80 and 385,407.60

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Solution

The fourth proportional to 1,226,857.20, 1,840,285.80 and 385,407.60 is: 578,111.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,857.20 : 1,840,285.80 = 385,407.60 : x
  2. Step 2: Convert to fraction form
    1,226,857.20/1,840,285.80 = 385,407.60/x
  3. Step 3: Cross multiply
    1,226,857.20x = 1,840,285.80 × 385,407.60
  4. Step 4: Simplify right side
    1,226,857.20x = 709,260,133,492.08
  5. Step 5: Solve for x
    x = 709,260,133,492.08/1,226,857.20
  6. Step 6: Final answer
    x = 578,111.40

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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.