Home / 426,492,365.20-639,738,547.80-196,909,853.20

Finding the Fourth Proportional to 426,492,365.20, 639,738,547.80 and 196,909,853.20

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Solution

The fourth proportional to 426,492,365.20, 639,738,547.80 and 196,909,853.20 is: 295,364,779.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,492,365.20 : 639,738,547.80 = 196,909,853.20 : x
  2. Step 2: Convert to fraction form
    426,492,365.20/639,738,547.80 = 196,909,853.20/x
  3. Step 3: Cross multiply
    426,492,365.20x = 639,738,547.80 × 196,909,853.20
  4. Step 4: Simplify right side
    426,492,365.20x = 125,970,823,533,679,168
  5. Step 5: Solve for x
    x = 125,970,823,533,679,168/426,492,365.20
  6. Step 6: Final answer
    x = 295,364,779.80

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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.