Home / 862,974,389.40-1,294,485,701.93-280,708,637.25

Finding the Fourth Proportional to 862,974,389.40, 1,294,485,701.93 and 280,708,637.25

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Solution

The fourth proportional to 862,974,389.40, 1,294,485,701.93 and 280,708,637.25 is: 421,070,800.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,974,389.40 : 1,294,485,701.93 = 280,708,637.25 : x
  2. Step 2: Convert to fraction form
    862,974,389.40/1,294,485,701.93 = 280,708,637.25/x
  3. Step 3: Cross multiply
    862,974,389.40x = 1,294,485,701.93 × 280,708,637.25
  4. Step 4: Simplify right side
    862,974,389.40x = 363,373,317,321,907,584
  5. Step 5: Solve for x
    x = 363,373,317,321,907,584/862,974,389.40
  6. Step 6: Final answer
    x = 421,070,800.92

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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.