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Finding the Fourth Proportional to 1,249,973.21, 1,724,965.80 and 677,013.50

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Solution

The fourth proportional to 1,249,973.21, 1,724,965.80 and 677,013.50 is: 934,280.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,973.21 : 1,724,965.80 = 677,013.50 : x
  2. Step 2: Convert to fraction form
    1,249,973.21/1,724,965.80 = 677,013.50/x
  3. Step 3: Cross multiply
    1,249,973.21x = 1,724,965.80 × 677,013.50
  4. Step 4: Simplify right side
    1,249,973.21x = 1,167,825,133,638.30
  5. Step 5: Solve for x
    x = 1,167,825,133,638.30/1,249,973.21
  6. Step 6: Final answer
    x = 934,280.13

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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.