Home / 521,552,401.20-782,328,601.80-314,928,140.40

Finding the Fourth Proportional to 521,552,401.20, 782,328,601.80 and 314,928,140.40

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Solution

The fourth proportional to 521,552,401.20, 782,328,601.80 and 314,928,140.40 is: 472,392,210.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,552,401.20 : 782,328,601.80 = 314,928,140.40 : x
  2. Step 2: Convert to fraction form
    521,552,401.20/782,328,601.80 = 314,928,140.40/x
  3. Step 3: Cross multiply
    521,552,401.20x = 782,328,601.80 × 314,928,140.40
  4. Step 4: Simplify right side
    521,552,401.20x = 246,377,291,746,606,048
  5. Step 5: Solve for x
    x = 246,377,291,746,606,048/521,552,401.20
  6. Step 6: Final answer
    x = 472,392,210.60

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1.5x scale

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.