Home / 899,401.30-1,241,190.10-491,520.40

Finding the Fourth Proportional to 899,401.30, 1,241,190.10 and 491,520.40

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Solution

The fourth proportional to 899,401.30, 1,241,190.10 and 491,520.40 is: 678,307.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,401.30 : 1,241,190.10 = 491,520.40 : x
  2. Step 2: Convert to fraction form
    899,401.30/1,241,190.10 = 491,520.40/x
  3. Step 3: Cross multiply
    899,401.30x = 1,241,190.10 × 491,520.40
  4. Step 4: Simplify right side
    899,401.30x = 610,070,254,428.04
  5. Step 5: Solve for x
    x = 610,070,254,428.04/899,401.30
  6. Step 6: Final answer
    x = 678,307.06

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.