Home / 926,939.40-1,390,409.10-906,203.40

Finding the Fourth Proportional to 926,939.40, 1,390,409.10 and 906,203.40

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Solution

The fourth proportional to 926,939.40, 1,390,409.10 and 906,203.40 is: 1,359,305.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,939.40 : 1,390,409.10 = 906,203.40 : x
  2. Step 2: Convert to fraction form
    926,939.40/1,390,409.10 = 906,203.40/x
  3. Step 3: Cross multiply
    926,939.40x = 1,390,409.10 × 906,203.40
  4. Step 4: Simplify right side
    926,939.40x = 1,259,993,453,810.94
  5. Step 5: Solve for x
    x = 1,259,993,453,810.94/926,939.40
  6. Step 6: Final answer
    x = 1,359,305.10

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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.