Home / 638,726,496.48-881,226,062.64-521,048,400.48

Finding the Fourth Proportional to 638,726,496.48, 881,226,062.64 and 521,048,400.48

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Solution

The fourth proportional to 638,726,496.48, 881,226,062.64 and 521,048,400.48 is: 718,870,178.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,726,496.48 : 881,226,062.64 = 521,048,400.48 : x
  2. Step 2: Convert to fraction form
    638,726,496.48/881,226,062.64 = 521,048,400.48/x
  3. Step 3: Cross multiply
    638,726,496.48x = 881,226,062.64 × 521,048,400.48
  4. Step 4: Simplify right side
    638,726,496.48x = 459,161,430,399,860,288
  5. Step 5: Solve for x
    x = 459,161,430,399,860,288/638,726,496.48
  6. Step 6: Final answer
    x = 718,870,178.28

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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.