Home / 1,290,938.07-1,781,557.65-717,965.94

Finding the Fourth Proportional to 1,290,938.07, 1,781,557.65 and 717,965.94

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Solution

The fourth proportional to 1,290,938.07, 1,781,557.65 and 717,965.94 is: 990,828.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,938.07 : 1,781,557.65 = 717,965.94 : x
  2. Step 2: Convert to fraction form
    1,290,938.07/1,781,557.65 = 717,965.94/x
  3. Step 3: Cross multiply
    1,290,938.07x = 1,781,557.65 × 717,965.94
  4. Step 4: Simplify right side
    1,290,938.07x = 1,279,097,712,846.44
  5. Step 5: Solve for x
    x = 1,279,097,712,846.44/1,290,938.07
  6. Step 6: Final answer
    x = 990,828.10

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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.