Home / 1,398,438,880.32-1,929,845,846.94-771,907,441.08

Finding the Fourth Proportional to 1,398,438,880.32, 1,929,845,846.94 and 771,907,441.08

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Solution

The fourth proportional to 1,398,438,880.32, 1,929,845,846.94 and 771,907,441.08 is: 1,065,232,374.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,438,880.32 : 1,929,845,846.94 = 771,907,441.08 : x
  2. Step 2: Convert to fraction form
    1,398,438,880.32/1,929,845,846.94 = 771,907,441.08/x
  3. Step 3: Cross multiply
    1,398,438,880.32x = 1,929,845,846.94 × 771,907,441.08
  4. Step 4: Simplify right side
    1,398,438,880.32x = 1,489,662,369,390,320,896
  5. Step 5: Solve for x
    x = 1,489,662,369,390,320,896/1,398,438,880.32
  6. Step 6: Final answer
    x = 1,065,232,374.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.