Home / 385,477,047.12-578,215,556.10-112,847,814.12

Finding the Fourth Proportional to 385,477,047.12, 578,215,556.10 and 112,847,814.12

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Solution

The fourth proportional to 385,477,047.12, 578,215,556.10 and 112,847,814.12 is: 169,271,716.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,477,047.12 : 578,215,556.10 = 112,847,814.12 : x
  2. Step 2: Convert to fraction form
    385,477,047.12/578,215,556.10 = 112,847,814.12/x
  3. Step 3: Cross multiply
    385,477,047.12x = 578,215,556.10 × 112,847,814.12
  4. Step 4: Simplify right side
    385,477,047.12x = 65,250,361,596,065,240
  5. Step 5: Solve for x
    x = 65,250,361,596,065,240/385,477,047.12
  6. Step 6: Final answer
    x = 169,271,716.91

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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.