Home / 1,288,087.40-1,934,204.70-972,900.20

Finding the Fourth Proportional to 1,288,087.40, 1,934,204.70 and 972,900.20

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Solution

The fourth proportional to 1,288,087.40, 1,934,204.70 and 972,900.20 is: 1,460,916.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,087.40 : 1,934,204.70 = 972,900.20 : x
  2. Step 2: Convert to fraction form
    1,288,087.40/1,934,204.70 = 972,900.20/x
  3. Step 3: Cross multiply
    1,288,087.40x = 1,934,204.70 × 972,900.20
  4. Step 4: Simplify right side
    1,288,087.40x = 1,881,788,139,470.94
  5. Step 5: Solve for x
    x = 1,881,788,139,470.94/1,288,087.40
  6. Step 6: Final answer
    x = 1,460,916.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.