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Finding the Fourth Proportional to 829,903.30, 1,243,870.80 and 745,266.40

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Solution

The fourth proportional to 829,903.30, 1,243,870.80 and 745,266.40 is: 1,117,015.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,903.30 : 1,243,870.80 = 745,266.40 : x
  2. Step 2: Convert to fraction form
    829,903.30/1,243,870.80 = 745,266.40/x
  3. Step 3: Cross multiply
    829,903.30x = 1,243,870.80 × 745,266.40
  4. Step 4: Simplify right side
    829,903.30x = 927,015,113,181.12
  5. Step 5: Solve for x
    x = 927,015,113,181.12/829,903.30
  6. Step 6: Final answer
    x = 1,117,015.82

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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.