Home / 761,649.89-1,051,036.36-439,340.76

Finding the Fourth Proportional to 761,649.89, 1,051,036.36 and 439,340.76

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Solution

The fourth proportional to 761,649.89, 1,051,036.36 and 439,340.76 is: 606,266.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,649.89 : 1,051,036.36 = 439,340.76 : x
  2. Step 2: Convert to fraction form
    761,649.89/1,051,036.36 = 439,340.76/x
  3. Step 3: Cross multiply
    761,649.89x = 1,051,036.36 × 439,340.76
  4. Step 4: Simplify right side
    761,649.89x = 461,763,112,091.68
  5. Step 5: Solve for x
    x = 461,763,112,091.68/761,649.89
  6. Step 6: Final answer
    x = 606,266.90

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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.