Home / 398,947,995.30-598,421,992.95-245,892,987.30

Finding the Fourth Proportional to 398,947,995.30, 598,421,992.95 and 245,892,987.30

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Solution

The fourth proportional to 398,947,995.30, 598,421,992.95 and 245,892,987.30 is: 368,839,480.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,947,995.30 : 598,421,992.95 = 245,892,987.30 : x
  2. Step 2: Convert to fraction form
    398,947,995.30/598,421,992.95 = 245,892,987.30/x
  3. Step 3: Cross multiply
    398,947,995.30x = 598,421,992.95 × 245,892,987.30
  4. Step 4: Simplify right side
    398,947,995.30x = 147,147,771,512,495,072
  5. Step 5: Solve for x
    x = 147,147,771,512,495,072/398,947,995.30
  6. Step 6: Final answer
    x = 368,839,480.95

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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.