Home / 1,386,565.67-1,913,284.76-813,396.71

Finding the Fourth Proportional to 1,386,565.67, 1,913,284.76 and 813,396.71

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Solution

The fourth proportional to 1,386,565.67, 1,913,284.76 and 813,396.71 is: 1,122,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,565.67 : 1,913,284.76 = 813,396.71 : x
  2. Step 2: Convert to fraction form
    1,386,565.67/1,913,284.76 = 813,396.71/x
  3. Step 3: Cross multiply
    1,386,565.67x = 1,913,284.76 × 813,396.71
  4. Step 4: Simplify right side
    1,386,565.67x = 1,556,259,535,893.84
  5. Step 5: Solve for x
    x = 1,556,259,535,893.84/1,386,565.67
  6. Step 6: Final answer
    x = 1,122,384.30

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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.