Home / 921,647.32-1,381,970.23-415,615.93

Finding the Fourth Proportional to 921,647.32, 1,381,970.23 and 415,615.93

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Solution

The fourth proportional to 921,647.32, 1,381,970.23 and 415,615.93 is: 623,198.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,647.32 : 1,381,970.23 = 415,615.93 : x
  2. Step 2: Convert to fraction form
    921,647.32/1,381,970.23 = 415,615.93/x
  3. Step 3: Cross multiply
    921,647.32x = 1,381,970.23 × 415,615.93
  4. Step 4: Simplify right side
    921,647.32x = 574,368,837,879.80
  5. Step 5: Solve for x
    x = 574,368,837,879.80/921,647.32
  6. Step 6: Final answer
    x = 623,198.08

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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.