Home / 718,196,376.20-991,110,551.48-388,171,515.20

Finding the Fourth Proportional to 718,196,376.20, 991,110,551.48 and 388,171,515.20

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Solution

The fourth proportional to 718,196,376.20, 991,110,551.48 and 388,171,515.20 is: 535,676,449.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,196,376.20 : 991,110,551.48 = 388,171,515.20 : x
  2. Step 2: Convert to fraction form
    718,196,376.20/991,110,551.48 = 388,171,515.20/x
  3. Step 3: Cross multiply
    718,196,376.20x = 991,110,551.48 × 388,171,515.20
  4. Step 4: Simplify right side
    718,196,376.20x = 384,720,884,495,443,840
  5. Step 5: Solve for x
    x = 384,720,884,495,443,840/718,196,376.20
  6. Step 6: Final answer
    x = 535,676,449.01

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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.