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Finding the Fourth Proportional to 524,509,619.56, 723,804,315 and 289,555,245.08

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Solution

The fourth proportional to 524,509,619.56, 723,804,315 and 289,555,245.08 is: 399,575,771.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,509,619.56 : 723,804,315 = 289,555,245.08 : x
  2. Step 2: Convert to fraction form
    524,509,619.56/723,804,315 = 289,555,245.08/x
  3. Step 3: Cross multiply
    524,509,619.56x = 723,804,315 × 289,555,245.08
  4. Step 4: Simplify right side
    524,509,619.56x = 209,581,335,819,786,496
  5. Step 5: Solve for x
    x = 209,581,335,819,786,496/524,509,619.56
  6. Step 6: Final answer
    x = 399,575,771.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.