Home / 651,995.10-977,992.65-439,418.70

Finding the Fourth Proportional to 651,995.10, 977,992.65 and 439,418.70

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Solution

The fourth proportional to 651,995.10, 977,992.65 and 439,418.70 is: 659,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,995.10 : 977,992.65 = 439,418.70 : x
  2. Step 2: Convert to fraction form
    651,995.10/977,992.65 = 439,418.70/x
  3. Step 3: Cross multiply
    651,995.10x = 977,992.65 × 439,418.70
  4. Step 4: Simplify right side
    651,995.10x = 429,748,258,872.56
  5. Step 5: Solve for x
    x = 429,748,258,872.56/651,995.10
  6. Step 6: Final answer
    x = 659,128.05

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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.