Home / 1,119,746,807.60-1,679,620,211.40-392,809,002.80

Finding the Fourth Proportional to 1,119,746,807.60, 1,679,620,211.40 and 392,809,002.80

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Solution

The fourth proportional to 1,119,746,807.60, 1,679,620,211.40 and 392,809,002.80 is: 589,213,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,746,807.60 : 1,679,620,211.40 = 392,809,002.80 : x
  2. Step 2: Convert to fraction form
    1,119,746,807.60/1,679,620,211.40 = 392,809,002.80/x
  3. Step 3: Cross multiply
    1,119,746,807.60x = 1,679,620,211.40 × 392,809,002.80
  4. Step 4: Simplify right side
    1,119,746,807.60x = 659,769,940,322,759,296
  5. Step 5: Solve for x
    x = 659,769,940,322,759,296/1,119,746,807.60
  6. Step 6: Final answer
    x = 589,213,504.20

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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.