Home / 1,213,643,987.60-1,817,386,685.40-667,768,787.60

Finding the Fourth Proportional to 1,213,643,987.60, 1,817,386,685.40 and 667,768,787.60

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Solution

The fourth proportional to 1,213,643,987.60, 1,817,386,685.40 and 667,768,787.60 is: 999,958,897.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,643,987.60 : 1,817,386,685.40 = 667,768,787.60 : x
  2. Step 2: Convert to fraction form
    1,213,643,987.60/1,817,386,685.40 = 667,768,787.60/x
  3. Step 3: Cross multiply
    1,213,643,987.60x = 1,817,386,685.40 × 667,768,787.60
  4. Step 4: Simplify right side
    1,213,643,987.60x = 1,213,594,103,509,940,736
  5. Step 5: Solve for x
    x = 1,213,594,103,509,940,736/1,213,643,987.60
  6. Step 6: Final answer
    x = 999,958,897.26

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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.