Home / 1,389,925-2,084,887.50-392,678.92

Finding the Fourth Proportional to 1,389,925, 2,084,887.50 and 392,678.92

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Solution

The fourth proportional to 1,389,925, 2,084,887.50 and 392,678.92 is: 589,018.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,925 : 2,084,887.50 = 392,678.92 : x
  2. Step 2: Convert to fraction form
    1,389,925/2,084,887.50 = 392,678.92/x
  3. Step 3: Cross multiply
    1,389,925x = 2,084,887.50 × 392,678.92
  4. Step 4: Simplify right side
    1,389,925x = 818,691,371,821.50
  5. Step 5: Solve for x
    x = 818,691,371,821.50/1,389,925
  6. Step 6: Final answer
    x = 589,018.38

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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.