Home / 1,223,691.66-1,688,693.13-679,878

Finding the Fourth Proportional to 1,223,691.66, 1,688,693.13 and 679,878

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Solution

The fourth proportional to 1,223,691.66, 1,688,693.13 and 679,878 is: 938,230.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,691.66 : 1,688,693.13 = 679,878 : x
  2. Step 2: Convert to fraction form
    1,223,691.66/1,688,693.13 = 679,878/x
  3. Step 3: Cross multiply
    1,223,691.66x = 1,688,693.13 × 679,878
  4. Step 4: Simplify right side
    1,223,691.66x = 1,148,105,307,838.14
  5. Step 5: Solve for x
    x = 1,148,105,307,838.14/1,223,691.66
  6. Step 6: Final answer
    x = 938,230.88

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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.