Home / 742,640.13-1,112,962.37-405,175.08

Finding the Fourth Proportional to 742,640.13, 1,112,962.37 and 405,175.08

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Solution

The fourth proportional to 742,640.13, 1,112,962.37 and 405,175.08 is: 607,218.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,640.13 : 1,112,962.37 = 405,175.08 : x
  2. Step 2: Convert to fraction form
    742,640.13/1,112,962.37 = 405,175.08/x
  3. Step 3: Cross multiply
    742,640.13x = 1,112,962.37 × 405,175.08
  4. Step 4: Simplify right side
    742,640.13x = 450,944,615,275.86
  5. Step 5: Solve for x
    x = 450,944,615,275.86/742,640.13
  6. Step 6: Final answer
    x = 607,218.22

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1.5x scale

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.