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Finding the Fourth Proportional to 1,298,638,943.63, 1,792,073,712.38 and 703,910,658.86

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Solution

The fourth proportional to 1,298,638,943.63, 1,792,073,712.38 and 703,910,658.86 is: 971,370,675.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,638,943.63 : 1,792,073,712.38 = 703,910,658.86 : x
  2. Step 2: Convert to fraction form
    1,298,638,943.63/1,792,073,712.38 = 703,910,658.86/x
  3. Step 3: Cross multiply
    1,298,638,943.63x = 1,792,073,712.38 × 703,910,658.86
  4. Step 4: Simplify right side
    1,298,638,943.63x = 1,261,459,787,594,611,968
  5. Step 5: Solve for x
    x = 1,261,459,787,594,611,968/1,298,638,943.63
  6. Step 6: Final answer
    x = 971,370,675.27

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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.