Home / 830,150.20-1,245,225.30-431,569.45

Finding the Fourth Proportional to 830,150.20, 1,245,225.30 and 431,569.45

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Solution

The fourth proportional to 830,150.20, 1,245,225.30 and 431,569.45 is: 647,354.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,150.20 : 1,245,225.30 = 431,569.45 : x
  2. Step 2: Convert to fraction form
    830,150.20/1,245,225.30 = 431,569.45/x
  3. Step 3: Cross multiply
    830,150.20x = 1,245,225.30 × 431,569.45
  4. Step 4: Simplify right side
    830,150.20x = 537,401,197,847.09
  5. Step 5: Solve for x
    x = 537,401,197,847.09/830,150.20
  6. Step 6: Final answer
    x = 647,354.18

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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.