Home / 1,389,825,210.20-2,085,090,686.22-643,379,124.92

Finding the Fourth Proportional to 1,389,825,210.20, 2,085,090,686.22 and 643,379,124.92

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Solution

The fourth proportional to 1,389,825,210.20, 2,085,090,686.22 and 643,379,124.92 is: 965,232,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,825,210.20 : 2,085,090,686.22 = 643,379,124.92 : x
  2. Step 2: Convert to fraction form
    1,389,825,210.20/2,085,090,686.22 = 643,379,124.92/x
  3. Step 3: Cross multiply
    1,389,825,210.20x = 2,085,090,686.22 × 643,379,124.92
  4. Step 4: Simplify right side
    1,389,825,210.20x = 1,341,503,821,079,065,856
  5. Step 5: Solve for x
    x = 1,341,503,821,079,065,856/1,389,825,210.20
  6. Step 6: Final answer
    x = 965,232,038.70

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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.