Home / 405,262,458.32-607,907,144.12-139,365,561.69

Finding the Fourth Proportional to 405,262,458.32, 607,907,144.12 and 139,365,561.69

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Solution

The fourth proportional to 405,262,458.32, 607,907,144.12 and 139,365,561.69 is: 209,052,970.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,262,458.32 : 607,907,144.12 = 139,365,561.69 : x
  2. Step 2: Convert to fraction form
    405,262,458.32/607,907,144.12 = 139,365,561.69/x
  3. Step 3: Cross multiply
    405,262,458.32x = 607,907,144.12 × 139,365,561.69
  4. Step 4: Simplify right side
    405,262,458.32x = 84,721,320,594,950,752
  5. Step 5: Solve for x
    x = 84,721,320,594,950,752/405,262,458.32
  6. Step 6: Final answer
    x = 209,052,970.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.