Home / 730,451.63-1,008,123.38-420,347.84

Finding the Fourth Proportional to 730,451.63, 1,008,123.38 and 420,347.84

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Solution

The fourth proportional to 730,451.63, 1,008,123.38 and 420,347.84 is: 580,137.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,451.63 : 1,008,123.38 = 420,347.84 : x
  2. Step 2: Convert to fraction form
    730,451.63/1,008,123.38 = 420,347.84/x
  3. Step 3: Cross multiply
    730,451.63x = 1,008,123.38 × 420,347.84
  4. Step 4: Simplify right side
    730,451.63x = 423,762,478,094.14
  5. Step 5: Solve for x
    x = 423,762,478,094.14/730,451.63
  6. Step 6: Final answer
    x = 580,137.63

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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.