Home / 1,398,681.74-1,930,177.96-786,834.95

Finding the Fourth Proportional to 1,398,681.74, 1,930,177.96 and 786,834.95

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Solution

The fourth proportional to 1,398,681.74, 1,930,177.96 and 786,834.95 is: 1,085,830.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,681.74 : 1,930,177.96 = 786,834.95 : x
  2. Step 2: Convert to fraction form
    1,398,681.74/1,930,177.96 = 786,834.95/x
  3. Step 3: Cross multiply
    1,398,681.74x = 1,930,177.96 × 786,834.95
  4. Step 4: Simplify right side
    1,398,681.74x = 1,518,731,467,029.73
  5. Step 5: Solve for x
    x = 1,518,731,467,029.73/1,398,681.74
  6. Step 6: Final answer
    x = 1,085,830.62

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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.