Home / 1,208,825,038.80-1,812,789,660.60-390,964,021.20

Finding the Fourth Proportional to 1,208,825,038.80, 1,812,789,660.60 and 390,964,021.20

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Solution

The fourth proportional to 1,208,825,038.80, 1,812,789,660.60 and 390,964,021.20 is: 586,301,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,825,038.80 : 1,812,789,660.60 = 390,964,021.20 : x
  2. Step 2: Convert to fraction form
    1,208,825,038.80/1,812,789,660.60 = 390,964,021.20/x
  3. Step 3: Cross multiply
    1,208,825,038.80x = 1,812,789,660.60 × 390,964,021.20
  4. Step 4: Simplify right side
    1,208,825,038.80x = 708,735,535,297,959,168
  5. Step 5: Solve for x
    x = 708,735,535,297,959,168/1,208,825,038.80
  6. Step 6: Final answer
    x = 586,301,170.60

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Double scale
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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.