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Finding the Fourth Proportional to 1,249,977.92, 1,724,961.47 and 706,289.72

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Solution

The fourth proportional to 1,249,977.92, 1,724,961.47 and 706,289.72 is: 974,675.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,977.92 : 1,724,961.47 = 706,289.72 : x
  2. Step 2: Convert to fraction form
    1,249,977.92/1,724,961.47 = 706,289.72/x
  3. Step 3: Cross multiply
    1,249,977.92x = 1,724,961.47 × 706,289.72
  4. Step 4: Simplify right side
    1,249,977.92x = 1,218,322,541,500.83
  5. Step 5: Solve for x
    x = 1,218,322,541,500.83/1,249,977.92
  6. Step 6: Final answer
    x = 974,675.25

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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.