Home / 948,011.77-1,308,256-518,291.79

Finding the Fourth Proportional to 948,011.77, 1,308,256 and 518,291.79

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Solution

The fourth proportional to 948,011.77, 1,308,256 and 518,291.79 is: 715,242.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    948,011.77 : 1,308,256 = 518,291.79 : x
  2. Step 2: Convert to fraction form
    948,011.77/1,308,256 = 518,291.79/x
  3. Step 3: Cross multiply
    948,011.77x = 1,308,256 × 518,291.79
  4. Step 4: Simplify right side
    948,011.77x = 678,058,344,018.24
  5. Step 5: Solve for x
    x = 678,058,344,018.24/948,011.77
  6. Step 6: Final answer
    x = 715,242.54

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Double scale
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Similar ratio
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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.