Home / 901,108.80-1,243,512-519,125.76

Finding the Fourth Proportional to 901,108.80, 1,243,512 and 519,125.76

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Solution

The fourth proportional to 901,108.80, 1,243,512 and 519,125.76 is: 716,383.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,108.80 : 1,243,512 = 519,125.76 : x
  2. Step 2: Convert to fraction form
    901,108.80/1,243,512 = 519,125.76/x
  3. Step 3: Cross multiply
    901,108.80x = 1,243,512 × 519,125.76
  4. Step 4: Simplify right side
    901,108.80x = 645,539,112,069.12
  5. Step 5: Solve for x
    x = 645,539,112,069.12/901,108.80
  6. Step 6: Final answer
    x = 716,383.10

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Half scale
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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.