Home / 988,881.35-1,483,542.54-420,280.38

Finding the Fourth Proportional to 988,881.35, 1,483,542.54 and 420,280.38

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Solution

The fourth proportional to 988,881.35, 1,483,542.54 and 420,280.38 is: 630,514.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,881.35 : 1,483,542.54 = 420,280.38 : x
  2. Step 2: Convert to fraction form
    988,881.35/1,483,542.54 = 420,280.38/x
  3. Step 3: Cross multiply
    988,881.35x = 1,483,542.54 × 420,280.38
  4. Step 4: Simplify right side
    988,881.35x = 623,503,822,457.37
  5. Step 5: Solve for x
    x = 623,503,822,457.37/988,881.35
  6. Step 6: Final answer
    x = 630,514.29

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1.5x scale

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.