Home / 1,263,009.48-1,742,978.16-690,085.20

Finding the Fourth Proportional to 1,263,009.48, 1,742,978.16 and 690,085.20

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Solution

The fourth proportional to 1,263,009.48, 1,742,978.16 and 690,085.20 is: 952,331.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,009.48 : 1,742,978.16 = 690,085.20 : x
  2. Step 2: Convert to fraction form
    1,263,009.48/1,742,978.16 = 690,085.20/x
  3. Step 3: Cross multiply
    1,263,009.48x = 1,742,978.16 × 690,085.20
  4. Step 4: Simplify right side
    1,263,009.48x = 1,202,803,432,139.23
  5. Step 5: Solve for x
    x = 1,202,803,432,139.23/1,263,009.48
  6. Step 6: Final answer
    x = 952,331.28

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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.