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Finding the Fourth Proportional to 1,249,983.21, 1,724,979.60 and 677,023.50

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Solution

The fourth proportional to 1,249,983.21, 1,724,979.60 and 677,023.50 is: 934,293.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,983.21 : 1,724,979.60 = 677,023.50 : x
  2. Step 2: Convert to fraction form
    1,249,983.21/1,724,979.60 = 677,023.50/x
  3. Step 3: Cross multiply
    1,249,983.21x = 1,724,979.60 × 677,023.50
  4. Step 4: Simplify right side
    1,249,983.21x = 1,167,851,726,220.60
  5. Step 5: Solve for x
    x = 1,167,851,726,220.60/1,249,983.21
  6. Step 6: Final answer
    x = 934,293.93

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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.