Home / 742,764.90-1,025,018.64-420,537.18

Finding the Fourth Proportional to 742,764.90, 1,025,018.64 and 420,537.18

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Solution

The fourth proportional to 742,764.90, 1,025,018.64 and 420,537.18 is: 580,343.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,764.90 : 1,025,018.64 = 420,537.18 : x
  2. Step 2: Convert to fraction form
    742,764.90/1,025,018.64 = 420,537.18/x
  3. Step 3: Cross multiply
    742,764.90x = 1,025,018.64 × 420,537.18
  4. Step 4: Simplify right side
    742,764.90x = 431,058,448,313.04
  5. Step 5: Solve for x
    x = 431,058,448,313.04/742,764.90
  6. Step 6: Final answer
    x = 580,343.05

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1.5x scale

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.