Home / 1,290,865.76-1,781,438.64-710,114.48

Finding the Fourth Proportional to 1,290,865.76, 1,781,438.64 and 710,114.48

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Solution

The fourth proportional to 1,290,865.76, 1,781,438.64 and 710,114.48 is: 979,982.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,865.76 : 1,781,438.64 = 710,114.48 : x
  2. Step 2: Convert to fraction form
    1,290,865.76/1,781,438.64 = 710,114.48/x
  3. Step 3: Cross multiply
    1,290,865.76x = 1,781,438.64 × 710,114.48
  4. Step 4: Simplify right side
    1,290,865.76x = 1,265,025,373,495.51
  5. Step 5: Solve for x
    x = 1,265,025,373,495.51/1,290,865.76
  6. Step 6: Final answer
    x = 979,982.13

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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.