Home / 687,492,460.98-948,762,512.64-386,130,880.04

Finding the Fourth Proportional to 687,492,460.98, 948,762,512.64 and 386,130,880.04

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Solution

The fourth proportional to 687,492,460.98, 948,762,512.64 and 386,130,880.04 is: 532,873,485.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,492,460.98 : 948,762,512.64 = 386,130,880.04 : x
  2. Step 2: Convert to fraction form
    687,492,460.98/948,762,512.64 = 386,130,880.04/x
  3. Step 3: Cross multiply
    687,492,460.98x = 948,762,512.64 × 386,130,880.04
  4. Step 4: Simplify right side
    687,492,460.98x = 366,346,503,949,901,056
  5. Step 5: Solve for x
    x = 366,346,503,949,901,056/687,492,460.98
  6. Step 6: Final answer
    x = 532,873,485.52

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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.