Home / 651,665.20-977,497.80-439,088.80

Finding the Fourth Proportional to 651,665.20, 977,497.80 and 439,088.80

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Solution

The fourth proportional to 651,665.20, 977,497.80 and 439,088.80 is: 658,633.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,665.20 : 977,497.80 = 439,088.80 : x
  2. Step 2: Convert to fraction form
    651,665.20/977,497.80 = 439,088.80/x
  3. Step 3: Cross multiply
    651,665.20x = 977,497.80 × 439,088.80
  4. Step 4: Simplify right side
    651,665.20x = 429,208,336,004.64
  5. Step 5: Solve for x
    x = 429,208,336,004.64/651,665.20
  6. Step 6: Final answer
    x = 658,633.20

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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.