Home / 780,038.70-1,170,058.05-660,464.48

Finding the Fourth Proportional to 780,038.70, 1,170,058.05 and 660,464.48

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Solution

The fourth proportional to 780,038.70, 1,170,058.05 and 660,464.48 is: 990,696.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,038.70 : 1,170,058.05 = 660,464.48 : x
  2. Step 2: Convert to fraction form
    780,038.70/1,170,058.05 = 660,464.48/x
  3. Step 3: Cross multiply
    780,038.70x = 1,170,058.05 × 660,464.48
  4. Step 4: Simplify right side
    780,038.70x = 772,781,775,712.77
  5. Step 5: Solve for x
    x = 772,781,775,712.77/780,038.70
  6. Step 6: Final answer
    x = 990,696.71

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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.