Home / 782,128.41-1,078,779.63-717,804.98

Finding the Fourth Proportional to 782,128.41, 1,078,779.63 and 717,804.98

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Solution

The fourth proportional to 782,128.41, 1,078,779.63 and 717,804.98 is: 990,059.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,128.41 : 1,078,779.63 = 717,804.98 : x
  2. Step 2: Convert to fraction form
    782,128.41/1,078,779.63 = 717,804.98/x
  3. Step 3: Cross multiply
    782,128.41x = 1,078,779.63 × 717,804.98
  4. Step 4: Simplify right side
    782,128.41x = 774,353,390,736.56
  5. Step 5: Solve for x
    x = 774,353,390,736.56/782,128.41
  6. Step 6: Final answer
    x = 990,059.16

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1.5x scale

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.