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Finding the Fourth Proportional to 768,750,518.40, 1,060,862,603.52 and 416,323,645.44

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Solution

The fourth proportional to 768,750,518.40, 1,060,862,603.52 and 416,323,645.44 is: 574,519,529.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,750,518.40 : 1,060,862,603.52 = 416,323,645.44 : x
  2. Step 2: Convert to fraction form
    768,750,518.40/1,060,862,603.52 = 416,323,645.44/x
  3. Step 3: Cross multiply
    768,750,518.40x = 1,060,862,603.52 × 416,323,645.44
  4. Step 4: Simplify right side
    768,750,518.40x = 441,662,186,408,415,744
  5. Step 5: Solve for x
    x = 441,662,186,408,415,744/768,750,518.40
  6. Step 6: Final answer
    x = 574,519,529.86

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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.