Home / 1,391,721.89-2,084,038.97-916,967.93

Finding the Fourth Proportional to 1,391,721.89, 2,084,038.97 and 916,967.93

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Solution

The fourth proportional to 1,391,721.89, 2,084,038.97 and 916,967.93 is: 1,373,116.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,721.89 : 2,084,038.97 = 916,967.93 : x
  2. Step 2: Convert to fraction form
    1,391,721.89/2,084,038.97 = 916,967.93/x
  3. Step 3: Cross multiply
    1,391,721.89x = 2,084,038.97 × 916,967.93
  4. Step 4: Simplify right side
    1,391,721.89x = 1,910,996,900,360.23
  5. Step 5: Solve for x
    x = 1,910,996,900,360.23/1,391,721.89
  6. Step 6: Final answer
    x = 1,373,116.94

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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.