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Finding the Fourth Proportional to 555,187,366.77, 766,507,457.64 and 357,293,525.21

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Solution

The fourth proportional to 555,187,366.77, 766,507,457.64 and 357,293,525.21 is: 493,289,595.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,187,366.77 : 766,507,457.64 = 357,293,525.21 : x
  2. Step 2: Convert to fraction form
    555,187,366.77/766,507,457.64 = 357,293,525.21/x
  3. Step 3: Cross multiply
    555,187,366.77x = 766,507,457.64 × 357,293,525.21
  4. Step 4: Simplify right side
    555,187,366.77x = 273,868,151,639,950,336
  5. Step 5: Solve for x
    x = 273,868,151,639,950,336/555,187,366.77
  6. Step 6: Final answer
    x = 493,289,595.61

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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.