Home / 398,642,357.15-556,738,811.05-398,642,357.15

Finding the Fourth Proportional to 398,642,357.15, 556,738,811.05 and 398,642,357.15

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Solution

The fourth proportional to 398,642,357.15, 556,738,811.05 and 398,642,357.15 is: 556,738,811.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,642,357.15 : 556,738,811.05 = 398,642,357.15 : x
  2. Step 2: Convert to fraction form
    398,642,357.15/556,738,811.05 = 398,642,357.15/x
  3. Step 3: Cross multiply
    398,642,357.15x = 556,738,811.05 × 398,642,357.15
  4. Step 4: Simplify right side
    398,642,357.15x = 221,939,671,953,860,448
  5. Step 5: Solve for x
    x = 221,939,671,953,860,448/398,642,357.15
  6. Step 6: Final answer
    x = 556,738,811.05

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.