Home / 1,128,393.42-1,557,182.85-644,968.98

Finding the Fourth Proportional to 1,128,393.42, 1,557,182.85 and 644,968.98

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Solution

The fourth proportional to 1,128,393.42, 1,557,182.85 and 644,968.98 is: 890,057.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,393.42 : 1,557,182.85 = 644,968.98 : x
  2. Step 2: Convert to fraction form
    1,128,393.42/1,557,182.85 = 644,968.98/x
  3. Step 3: Cross multiply
    1,128,393.42x = 1,557,182.85 × 644,968.98
  4. Step 4: Simplify right side
    1,128,393.42x = 1,004,334,634,437.99
  5. Step 5: Solve for x
    x = 1,004,334,634,437.99/1,128,393.42
  6. Step 6: Final answer
    x = 890,057.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.