Home / 638,726,487.48-881,226,050.22-521,048,391.48

Finding the Fourth Proportional to 638,726,487.48, 881,226,050.22 and 521,048,391.48

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Solution

The fourth proportional to 638,726,487.48, 881,226,050.22 and 521,048,391.48 is: 718,870,165.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,726,487.48 : 881,226,050.22 = 521,048,391.48 : x
  2. Step 2: Convert to fraction form
    638,726,487.48/881,226,050.22 = 521,048,391.48/x
  3. Step 3: Cross multiply
    638,726,487.48x = 881,226,050.22 × 521,048,391.48
  4. Step 4: Simplify right side
    638,726,487.48x = 459,161,415,997,404,736
  5. Step 5: Solve for x
    x = 459,161,415,997,404,736/638,726,487.48
  6. Step 6: Final answer
    x = 718,870,165.87

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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.