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Finding the Fourth Proportional to 845,450.64, 1,267,807.32 and 319,770

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Solution

The fourth proportional to 845,450.64, 1,267,807.32 and 319,770 is: 479,515.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,450.64 : 1,267,807.32 = 319,770 : x
  2. Step 2: Convert to fraction form
    845,450.64/1,267,807.32 = 319,770/x
  3. Step 3: Cross multiply
    845,450.64x = 1,267,807.32 × 319,770
  4. Step 4: Simplify right side
    845,450.64x = 405,406,746,716.40
  5. Step 5: Solve for x
    x = 405,406,746,716.40/845,450.64
  6. Step 6: Final answer
    x = 479,515.57

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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.