Home / 1,391,771.34-1,920,547.38-771,570.36

Finding the Fourth Proportional to 1,391,771.34, 1,920,547.38 and 771,570.36

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Solution

The fourth proportional to 1,391,771.34, 1,920,547.38 and 771,570.36 is: 1,064,713.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,771.34 : 1,920,547.38 = 771,570.36 : x
  2. Step 2: Convert to fraction form
    1,391,771.34/1,920,547.38 = 771,570.36/x
  3. Step 3: Cross multiply
    1,391,771.34x = 1,920,547.38 × 771,570.36
  4. Step 4: Simplify right side
    1,391,771.34x = 1,481,837,433,383.66
  5. Step 5: Solve for x
    x = 1,481,837,433,383.66/1,391,771.34
  6. Step 6: Final answer
    x = 1,064,713.28

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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.