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Finding the Fourth Proportional to 885,482.88, 1,221,963.68 and 483,072

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Solution

The fourth proportional to 885,482.88, 1,221,963.68 and 483,072 is: 666,637.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,482.88 : 1,221,963.68 = 483,072 : x
  2. Step 2: Convert to fraction form
    885,482.88/1,221,963.68 = 483,072/x
  3. Step 3: Cross multiply
    885,482.88x = 1,221,963.68 × 483,072
  4. Step 4: Simplify right side
    885,482.88x = 590,296,438,824.96
  5. Step 5: Solve for x
    x = 590,296,438,824.96/885,482.88
  6. Step 6: Final answer
    x = 666,637.89

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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.