Home / 651,401.20-977,101.80-540,809.20

Finding the Fourth Proportional to 651,401.20, 977,101.80 and 540,809.20

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Solution

The fourth proportional to 651,401.20, 977,101.80 and 540,809.20 is: 811,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,401.20 : 977,101.80 = 540,809.20 : x
  2. Step 2: Convert to fraction form
    651,401.20/977,101.80 = 540,809.20/x
  3. Step 3: Cross multiply
    651,401.20x = 977,101.80 × 540,809.20
  4. Step 4: Simplify right side
    651,401.20x = 528,425,642,776.56
  5. Step 5: Solve for x
    x = 528,425,642,776.56/651,401.20
  6. Step 6: Final answer
    x = 811,213.80

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