Home / 429,715,665.60-644,573,498.40-142,464,004.80

Finding the Fourth Proportional to 429,715,665.60, 644,573,498.40 and 142,464,004.80

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Solution

The fourth proportional to 429,715,665.60, 644,573,498.40 and 142,464,004.80 is: 213,696,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,715,665.60 : 644,573,498.40 = 142,464,004.80 : x
  2. Step 2: Convert to fraction form
    429,715,665.60/644,573,498.40 = 142,464,004.80/x
  3. Step 3: Cross multiply
    429,715,665.60x = 644,573,498.40 × 142,464,004.80
  4. Step 4: Simplify right side
    429,715,665.60x = 91,828,521,970,010,400
  5. Step 5: Solve for x
    x = 91,828,521,970,010,400/429,715,665.60
  6. Step 6: Final answer
    x = 213,696,007.20

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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.