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Finding the Fourth Proportional to 1,330,510.90, 1,992,813.90 and 1,153,363.90

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Solution

The fourth proportional to 1,330,510.90, 1,992,813.90 and 1,153,363.90 is: 1,727,486.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,510.90 : 1,992,813.90 = 1,153,363.90 : x
  2. Step 2: Convert to fraction form
    1,330,510.90/1,992,813.90 = 1,153,363.90/x
  3. Step 3: Cross multiply
    1,330,510.90x = 1,992,813.90 × 1,153,363.90
  4. Step 4: Simplify right side
    1,330,510.90x = 2,298,439,611,678.21
  5. Step 5: Solve for x
    x = 2,298,439,611,678.21/1,330,510.90
  6. Step 6: Final answer
    x = 1,727,486.50

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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.