Home / 971,989.77-1,339,818.47-665,536.20

Finding the Fourth Proportional to 971,989.77, 1,339,818.47 and 665,536.20

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Solution

The fourth proportional to 971,989.77, 1,339,818.47 and 665,536.20 is: 917,394.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,989.77 : 1,339,818.47 = 665,536.20 : x
  2. Step 2: Convert to fraction form
    971,989.77/1,339,818.47 = 665,536.20/x
  3. Step 3: Cross multiply
    971,989.77x = 1,339,818.47 × 665,536.20
  4. Step 4: Simplify right side
    971,989.77x = 891,697,687,357.38
  5. Step 5: Solve for x
    x = 891,697,687,357.38/971,989.77
  6. Step 6: Final answer
    x = 917,394.10

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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.