Home / 651,921,346.35-977,882,019.53-393,003,291.15

Finding the Fourth Proportional to 651,921,346.35, 977,882,019.53 and 393,003,291.15

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Solution

The fourth proportional to 651,921,346.35, 977,882,019.53 and 393,003,291.15 is: 589,504,936.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,921,346.35 : 977,882,019.53 = 393,003,291.15 : x
  2. Step 2: Convert to fraction form
    651,921,346.35/977,882,019.53 = 393,003,291.15/x
  3. Step 3: Cross multiply
    651,921,346.35x = 977,882,019.53 × 393,003,291.15
  4. Step 4: Simplify right side
    651,921,346.35x = 384,310,852,029,733,504
  5. Step 5: Solve for x
    x = 384,310,852,029,733,504/651,921,346.35
  6. Step 6: Final answer
    x = 589,504,936.73

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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.