Home / 421,398,288.60-630,838,059.89-254,897,911.59

Finding the Fourth Proportional to 421,398,288.60, 630,838,059.89 and 254,897,911.59

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Solution

The fourth proportional to 421,398,288.60, 630,838,059.89 and 254,897,911.59 is: 381,585,090.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,398,288.60 : 630,838,059.89 = 254,897,911.59 : x
  2. Step 2: Convert to fraction form
    421,398,288.60/630,838,059.89 = 254,897,911.59/x
  3. Step 3: Cross multiply
    421,398,288.60x = 630,838,059.89 × 254,897,911.59
  4. Step 4: Simplify right side
    421,398,288.60x = 160,799,304,016,173,856
  5. Step 5: Solve for x
    x = 160,799,304,016,173,856/421,398,288.60
  6. Step 6: Final answer
    x = 381,585,090.32

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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.