Home / 1,188,943.42-1,783,040.48-390,038.80

Finding the Fourth Proportional to 1,188,943.42, 1,783,040.48 and 390,038.80

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Solution

The fourth proportional to 1,188,943.42, 1,783,040.48 and 390,038.80 is: 584,935.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,943.42 : 1,783,040.48 = 390,038.80 : x
  2. Step 2: Convert to fraction form
    1,188,943.42/1,783,040.48 = 390,038.80/x
  3. Step 3: Cross multiply
    1,188,943.42x = 1,783,040.48 × 390,038.80
  4. Step 4: Simplify right side
    1,188,943.42x = 695,454,964,225.47
  5. Step 5: Solve for x
    x = 695,454,964,225.47/1,188,943.42
  6. Step 6: Final answer
    x = 584,935.29

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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.