Home / 931,347.78-1,285,261.14-528,939.78

Finding the Fourth Proportional to 931,347.78, 1,285,261.14 and 528,939.78

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Solution

The fourth proportional to 931,347.78, 1,285,261.14 and 528,939.78 is: 729,937.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,347.78 : 1,285,261.14 = 528,939.78 : x
  2. Step 2: Convert to fraction form
    931,347.78/1,285,261.14 = 528,939.78/x
  3. Step 3: Cross multiply
    931,347.78x = 1,285,261.14 × 528,939.78
  4. Step 4: Simplify right side
    931,347.78x = 679,825,744,634.15
  5. Step 5: Solve for x
    x = 679,825,744,634.15/931,347.78
  6. Step 6: Final answer
    x = 729,937.58

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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.