Home / 427,957,407.25-642,155,754.57-203,862,885.10

Finding the Fourth Proportional to 427,957,407.25, 642,155,754.57 and 203,862,885.10

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Solution

The fourth proportional to 427,957,407.25, 642,155,754.57 and 203,862,885.10 is: 305,898,957.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,957,407.25 : 642,155,754.57 = 203,862,885.10 : x
  2. Step 2: Convert to fraction form
    427,957,407.25/642,155,754.57 = 203,862,885.10/x
  3. Step 3: Cross multiply
    427,957,407.25x = 642,155,754.57 × 203,862,885.10
  4. Step 4: Simplify right side
    427,957,407.25x = 130,911,724,810,207,712
  5. Step 5: Solve for x
    x = 130,911,724,810,207,712/427,957,407.25
  6. Step 6: Final answer
    x = 305,898,957.68

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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.