Home / 1,369,120.51-1,888,807.76-916,557.31

Finding the Fourth Proportional to 1,369,120.51, 1,888,807.76 and 916,557.31

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Solution

The fourth proportional to 1,369,120.51, 1,888,807.76 and 916,557.31 is: 1,264,461.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,120.51 : 1,888,807.76 = 916,557.31 : x
  2. Step 2: Convert to fraction form
    1,369,120.51/1,888,807.76 = 916,557.31/x
  3. Step 3: Cross multiply
    1,369,120.51x = 1,888,807.76 × 916,557.31
  4. Step 4: Simplify right side
    1,369,120.51x = 1,731,200,559,612.73
  5. Step 5: Solve for x
    x = 1,731,200,559,612.73/1,369,120.51
  6. Step 6: Final answer
    x = 1,264,461.78

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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.