Home / 739,978.49-1,021,173.50-400,446.74

Finding the Fourth Proportional to 739,978.49, 1,021,173.50 and 400,446.74

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Solution

The fourth proportional to 739,978.49, 1,021,173.50 and 400,446.74 is: 552,618.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,978.49 : 1,021,173.50 = 400,446.74 : x
  2. Step 2: Convert to fraction form
    739,978.49/1,021,173.50 = 400,446.74/x
  3. Step 3: Cross multiply
    739,978.49x = 1,021,173.50 × 400,446.74
  4. Step 4: Simplify right side
    739,978.49x = 408,925,597,047.16
  5. Step 5: Solve for x
    x = 408,925,597,047.16/739,978.49
  6. Step 6: Final answer
    x = 552,618.22

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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.