Home / 1,238,916,391.68-1,710,065,659.20-809,816,014.40

Finding the Fourth Proportional to 1,238,916,391.68, 1,710,065,659.20 and 809,816,014.40

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Solution

The fourth proportional to 1,238,916,391.68, 1,710,065,659.20 and 809,816,014.40 is: 1,117,782,092.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,916,391.68 : 1,710,065,659.20 = 809,816,014.40 : x
  2. Step 2: Convert to fraction form
    1,238,916,391.68/1,710,065,659.20 = 809,816,014.40/x
  3. Step 3: Cross multiply
    1,238,916,391.68x = 1,710,065,659.20 × 809,816,014.40
  4. Step 4: Simplify right side
    1,238,916,391.68x = 1,384,838,556,495,652,608
  5. Step 5: Solve for x
    x = 1,384,838,556,495,652,608/1,238,916,391.68
  6. Step 6: Final answer
    x = 1,117,782,092.32

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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.