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Finding the Fourth Proportional to 829,968.30, 1,243,968.30 and 745,331.40

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Solution

The fourth proportional to 829,968.30, 1,243,968.30 and 745,331.40 is: 1,117,113.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,968.30 : 1,243,968.30 = 745,331.40 : x
  2. Step 2: Convert to fraction form
    829,968.30/1,243,968.30 = 745,331.40/x
  3. Step 3: Cross multiply
    829,968.30x = 1,243,968.30 × 745,331.40
  4. Step 4: Simplify right side
    829,968.30x = 927,168,634,594.62
  5. Step 5: Solve for x
    x = 927,168,634,594.62/829,968.30
  6. Step 6: Final answer
    x = 1,117,113.31

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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.