Home / 1,242,215,998.20-1,862,615,409.30-465,886,985.40

Finding the Fourth Proportional to 1,242,215,998.20, 1,862,615,409.30 and 465,886,985.40

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Solution

The fourth proportional to 1,242,215,998.20, 1,862,615,409.30 and 465,886,985.40 is: 698,564,725.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,215,998.20 : 1,862,615,409.30 = 465,886,985.40 : x
  2. Step 2: Convert to fraction form
    1,242,215,998.20/1,862,615,409.30 = 465,886,985.40/x
  3. Step 3: Cross multiply
    1,242,215,998.20x = 1,862,615,409.30 × 465,886,985.40
  4. Step 4: Simplify right side
    1,242,215,998.20x = 867,768,277,998,364,032
  5. Step 5: Solve for x
    x = 867,768,277,998,364,032/1,242,215,998.20
  6. Step 6: Final answer
    x = 698,564,725.66

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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.