Home / 921,187.40-1,382,557.48-389,090.30

Finding the Fourth Proportional to 921,187.40, 1,382,557.48 and 389,090.30

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Solution

The fourth proportional to 921,187.40, 1,382,557.48 and 389,090.30 is: 583,963.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,187.40 : 1,382,557.48 = 389,090.30 : x
  2. Step 2: Convert to fraction form
    921,187.40/1,382,557.48 = 389,090.30/x
  3. Step 3: Cross multiply
    921,187.40x = 1,382,557.48 × 389,090.30
  4. Step 4: Simplify right side
    921,187.40x = 537,939,696,774.93
  5. Step 5: Solve for x
    x = 537,939,696,774.93/921,187.40
  6. Step 6: Final answer
    x = 583,963.37

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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.