Home / 767,078.19-1,058,128.89-480,100.05

Finding the Fourth Proportional to 767,078.19, 1,058,128.89 and 480,100.05

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Solution

The fourth proportional to 767,078.19, 1,058,128.89 and 480,100.05 is: 662,263.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,078.19 : 1,058,128.89 = 480,100.05 : x
  2. Step 2: Convert to fraction form
    767,078.19/1,058,128.89 = 480,100.05/x
  3. Step 3: Cross multiply
    767,078.19x = 1,058,128.89 × 480,100.05
  4. Step 4: Simplify right side
    767,078.19x = 508,007,732,995.44
  5. Step 5: Solve for x
    x = 508,007,732,995.44/767,078.19
  6. Step 6: Final answer
    x = 662,263.30

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Double scale
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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.