Home / 1,398,654.81-1,930,140.86-786,808.04

Finding the Fourth Proportional to 1,398,654.81, 1,930,140.86 and 786,808.04

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Solution

The fourth proportional to 1,398,654.81, 1,930,140.86 and 786,808.04 is: 1,085,793.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,654.81 : 1,930,140.86 = 786,808.04 : x
  2. Step 2: Convert to fraction form
    1,398,654.81/1,930,140.86 = 786,808.04/x
  3. Step 3: Cross multiply
    1,398,654.81x = 1,930,140.86 × 786,808.04
  4. Step 4: Simplify right side
    1,398,654.81x = 1,518,650,333,395.77
  5. Step 5: Solve for x
    x = 1,518,650,333,395.77/1,398,654.81
  6. Step 6: Final answer
    x = 1,085,793.52

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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.