Home / 915,902,776,071.85-1,374,481,721,387.80-319,662,643,358.88

Finding the Fourth Proportional to 915,902,776,071.85, 1,374,481,721,387.80 and 319,662,643,358.88

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Solution

The fourth proportional to 915,902,776,071.85, 1,374,481,721,387.80 and 319,662,643,358.88 is: 479,712,991,144.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,902,776,071.85 : 1,374,481,721,387.80 = 319,662,643,358.88 : x
  2. Step 2: Convert to fraction form
    915,902,776,071.85/1,374,481,721,387.80 = 319,662,643,358.88/x
  3. Step 3: Cross multiply
    915,902,776,071.85x = 1,374,481,721,387.80 × 319,662,643,358.88
  4. Step 4: Simplify right side
    915,902,776,071.85x = 439,370,460,307,287,804,215,296
  5. Step 5: Solve for x
    x = 439,370,460,307,287,804,215,296/915,902,776,071.85
  6. Step 6: Final answer
    x = 479,712,991,144.84

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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.