Home / 1,290,350.40-1,935,914.40-917,102.40

Finding the Fourth Proportional to 1,290,350.40, 1,935,914.40 and 917,102.40

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Solution

The fourth proportional to 1,290,350.40, 1,935,914.40 and 917,102.40 is: 1,375,929.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,350.40 : 1,935,914.40 = 917,102.40 : x
  2. Step 2: Convert to fraction form
    1,290,350.40/1,935,914.40 = 917,102.40/x
  3. Step 3: Cross multiply
    1,290,350.40x = 1,935,914.40 × 917,102.40
  4. Step 4: Simplify right side
    1,290,350.40x = 1,775,431,742,434.56
  5. Step 5: Solve for x
    x = 1,775,431,742,434.56/1,290,350.40
  6. Step 6: Final answer
    x = 1,375,929.94

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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.