Home / 870,321.37-1,299,525.79-779,779.57

Finding the Fourth Proportional to 870,321.37, 1,299,525.79 and 779,779.57

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Solution

The fourth proportional to 870,321.37, 1,299,525.79 and 779,779.57 is: 1,164,332.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,321.37 : 1,299,525.79 = 779,779.57 : x
  2. Step 2: Convert to fraction form
    870,321.37/1,299,525.79 = 779,779.57/x
  3. Step 3: Cross multiply
    870,321.37x = 1,299,525.79 × 779,779.57
  4. Step 4: Simplify right side
    870,321.37x = 1,013,343,661,730.11
  5. Step 5: Solve for x
    x = 1,013,343,661,730.11/870,321.37
  6. Step 6: Final answer
    x = 1,164,332.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.