Home / 516,117,346.20-774,176,019.30-258,128,328.60

Finding the Fourth Proportional to 516,117,346.20, 774,176,019.30 and 258,128,328.60

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Solution

The fourth proportional to 516,117,346.20, 774,176,019.30 and 258,128,328.60 is: 387,192,492.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,117,346.20 : 774,176,019.30 = 258,128,328.60 : x
  2. Step 2: Convert to fraction form
    516,117,346.20/774,176,019.30 = 258,128,328.60/x
  3. Step 3: Cross multiply
    516,117,346.20x = 774,176,019.30 × 258,128,328.60
  4. Step 4: Simplify right side
    516,117,346.20x = 199,836,761,904,110,336
  5. Step 5: Solve for x
    x = 199,836,761,904,110,336/516,117,346.20
  6. Step 6: Final answer
    x = 387,192,492.90

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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.