Home / 427,957,408.25-642,155,756.07-203,862,886.10

Finding the Fourth Proportional to 427,957,408.25, 642,155,756.07 and 203,862,886.10

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Solution

The fourth proportional to 427,957,408.25, 642,155,756.07 and 203,862,886.10 is: 305,898,959.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,957,408.25 : 642,155,756.07 = 203,862,886.10 : x
  2. Step 2: Convert to fraction form
    427,957,408.25/642,155,756.07 = 203,862,886.10/x
  3. Step 3: Cross multiply
    427,957,408.25x = 642,155,756.07 × 203,862,886.10
  4. Step 4: Simplify right side
    427,957,408.25x = 130,911,725,758,157,808
  5. Step 5: Solve for x
    x = 130,911,725,758,157,808/427,957,408.25
  6. Step 6: Final answer
    x = 305,898,959.18

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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.