Home / 1,992,856,497.40-2,989,268,999.70-518,993,457.40

Finding the Fourth Proportional to 1,992,856,497.40, 2,989,268,999.70 and 518,993,457.40

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Solution

The fourth proportional to 1,992,856,497.40, 2,989,268,999.70 and 518,993,457.40 is: 778,486,085.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,856,497.40 : 2,989,268,999.70 = 518,993,457.40 : x
  2. Step 2: Convert to fraction form
    1,992,856,497.40/2,989,268,999.70 = 518,993,457.40/x
  3. Step 3: Cross multiply
    1,992,856,497.40x = 2,989,268,999.70 × 518,993,457.40
  4. Step 4: Simplify right side
    1,992,856,497.40x = 1,551,411,053,252,942,336
  5. Step 5: Solve for x
    x = 1,551,411,053,252,942,336/1,992,856,497.40
  6. Step 6: Final answer
    x = 778,486,085.31

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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.