Home / 839,162,405.70-1,258,743,608.55-512,645,055.30

Finding the Fourth Proportional to 839,162,405.70, 1,258,743,608.55 and 512,645,055.30

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Solution

The fourth proportional to 839,162,405.70, 1,258,743,608.55 and 512,645,055.30 is: 768,967,582.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,162,405.70 : 1,258,743,608.55 = 512,645,055.30 : x
  2. Step 2: Convert to fraction form
    839,162,405.70/1,258,743,608.55 = 512,645,055.30/x
  3. Step 3: Cross multiply
    839,162,405.70x = 1,258,743,608.55 × 512,645,055.30
  4. Step 4: Simplify right side
    839,162,405.70x = 645,288,686,813,636,352
  5. Step 5: Solve for x
    x = 645,288,686,813,636,352/839,162,405.70
  6. Step 6: Final answer
    x = 768,967,582.95

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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.