Home / 1,992,038,468.20-2,988,505,599.90-611,916,663.40

Finding the Fourth Proportional to 1,992,038,468.20, 2,988,505,599.90 and 611,916,663.40

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Solution

The fourth proportional to 1,992,038,468.20, 2,988,505,599.90 and 611,916,663.40 is: 918,012,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,038,468.20 : 2,988,505,599.90 = 611,916,663.40 : x
  2. Step 2: Convert to fraction form
    1,992,038,468.20/2,988,505,599.90 = 611,916,663.40/x
  3. Step 3: Cross multiply
    1,992,038,468.20x = 2,988,505,599.90 × 611,916,663.40
  4. Step 4: Simplify right side
    1,992,038,468.20x = 1,828,716,375,243,023,360
  5. Step 5: Solve for x
    x = 1,828,716,375,243,023,360/1,992,038,468.20
  6. Step 6: Final answer
    x = 918,012,580.80

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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.