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Finding the Fourth Proportional to 811,361.12, 1,119,657.28 and 448,776

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Solution

The fourth proportional to 811,361.12, 1,119,657.28 and 448,776 is: 619,299.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,361.12 : 1,119,657.28 = 448,776 : x
  2. Step 2: Convert to fraction form
    811,361.12/1,119,657.28 = 448,776/x
  3. Step 3: Cross multiply
    811,361.12x = 1,119,657.28 × 448,776
  4. Step 4: Simplify right side
    811,361.12x = 502,475,315,489.28
  5. Step 5: Solve for x
    x = 502,475,315,489.28/811,361.12
  6. Step 6: Final answer
    x = 619,299.23

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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.