Home / 1,988,063,999.60-2,982,095,999.40-679,443,681.20

Finding the Fourth Proportional to 1,988,063,999.60, 2,982,095,999.40 and 679,443,681.20

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Solution

The fourth proportional to 1,988,063,999.60, 2,982,095,999.40 and 679,443,681.20 is: 1,019,165,521.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,063,999.60 : 2,982,095,999.40 = 679,443,681.20 : x
  2. Step 2: Convert to fraction form
    1,988,063,999.60/2,982,095,999.40 = 679,443,681.20/x
  3. Step 3: Cross multiply
    1,988,063,999.60x = 2,982,095,999.40 × 679,443,681.20
  4. Step 4: Simplify right side
    1,988,063,999.60x = 2,026,166,283,524,129,280
  5. Step 5: Solve for x
    x = 2,026,166,283,524,129,280/1,988,063,999.60
  6. Step 6: Final answer
    x = 1,019,165,521.80

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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.