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Finding the Fourth Proportional to 885,783.20, 1,328,674.80 and 511,368.80

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Solution

The fourth proportional to 885,783.20, 1,328,674.80 and 511,368.80 is: 767,053.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,783.20 : 1,328,674.80 = 511,368.80 : x
  2. Step 2: Convert to fraction form
    885,783.20/1,328,674.80 = 511,368.80/x
  3. Step 3: Cross multiply
    885,783.20x = 1,328,674.80 × 511,368.80
  4. Step 4: Simplify right side
    885,783.20x = 679,442,838,066.24
  5. Step 5: Solve for x
    x = 679,442,838,066.24/885,783.20
  6. Step 6: Final answer
    x = 767,053.20

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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.