Home / 429,440,025.60-644,348,995.20-199,290,643.20

Finding the Fourth Proportional to 429,440,025.60, 644,348,995.20 and 199,290,643.20

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Solution

The fourth proportional to 429,440,025.60, 644,348,995.20 and 199,290,643.20 is: 299,023,654.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,440,025.60 : 644,348,995.20 = 199,290,643.20 : x
  2. Step 2: Convert to fraction form
    429,440,025.60/644,348,995.20 = 199,290,643.20/x
  3. Step 3: Cross multiply
    429,440,025.60x = 644,348,995.20 × 199,290,643.20
  4. Step 4: Simplify right side
    429,440,025.60x = 128,412,725,698,681,712
  5. Step 5: Solve for x
    x = 128,412,725,698,681,712/429,440,025.60
  6. Step 6: Final answer
    x = 299,023,654.16

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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.