Home / 1,391,265.01-1,919,941.43-771,109.72

Finding the Fourth Proportional to 1,391,265.01, 1,919,941.43 and 771,109.72

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Solution

The fourth proportional to 1,391,265.01, 1,919,941.43 and 771,109.72 is: 1,064,129.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,265.01 : 1,919,941.43 = 771,109.72 : x
  2. Step 2: Convert to fraction form
    1,391,265.01/1,919,941.43 = 771,109.72/x
  3. Step 3: Cross multiply
    1,391,265.01x = 1,919,941.43 × 771,109.72
  4. Step 4: Simplify right side
    1,391,265.01x = 1,480,485,495,631.62
  5. Step 5: Solve for x
    x = 1,480,485,495,631.62/1,391,265.01
  6. Step 6: Final answer
    x = 1,064,129.04

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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.