Home / 990,879.72-1,367,368.23-561,162.93

Finding the Fourth Proportional to 990,879.72, 1,367,368.23 and 561,162.93

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Solution

The fourth proportional to 990,879.72, 1,367,368.23 and 561,162.93 is: 774,378.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,879.72 : 1,367,368.23 = 561,162.93 : x
  2. Step 2: Convert to fraction form
    990,879.72/1,367,368.23 = 561,162.93/x
  3. Step 3: Cross multiply
    990,879.72x = 1,367,368.23 × 561,162.93
  4. Step 4: Simplify right side
    990,879.72x = 767,316,362,335.71
  5. Step 5: Solve for x
    x = 767,316,362,335.71/990,879.72
  6. Step 6: Final answer
    x = 774,378.91

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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.