Home / 765,529.86-1,145,486.28-638,857.35

Finding the Fourth Proportional to 765,529.86, 1,145,486.28 and 638,857.35

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Solution

The fourth proportional to 765,529.86, 1,145,486.28 and 638,857.35 is: 955,942.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,529.86 : 1,145,486.28 = 638,857.35 : x
  2. Step 2: Convert to fraction form
    765,529.86/1,145,486.28 = 638,857.35/x
  3. Step 3: Cross multiply
    765,529.86x = 1,145,486.28 × 638,857.35
  4. Step 4: Simplify right side
    765,529.86x = 731,802,329,302.16
  5. Step 5: Solve for x
    x = 731,802,329,302.16/765,529.86
  6. Step 6: Final answer
    x = 955,942.24

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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.