Home / 689,826,766.81-951,970,977.39-392,462,608.92

Finding the Fourth Proportional to 689,826,766.81, 951,970,977.39 and 392,462,608.92

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Solution

The fourth proportional to 689,826,766.81, 951,970,977.39 and 392,462,608.92 is: 541,604,111.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,826,766.81 : 951,970,977.39 = 392,462,608.92 : x
  2. Step 2: Convert to fraction form
    689,826,766.81/951,970,977.39 = 392,462,608.92/x
  3. Step 3: Cross multiply
    689,826,766.81x = 951,970,977.39 × 392,462,608.92
  4. Step 4: Simplify right side
    689,826,766.81x = 373,613,013,402,601,728
  5. Step 5: Solve for x
    x = 373,613,013,402,601,728/689,826,766.81
  6. Step 6: Final answer
    x = 541,604,111.90

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1.5x scale

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.