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Finding the Fourth Proportional to 561,331.48, 774,647.58 and 306,693.40

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Solution

The fourth proportional to 561,331.48, 774,647.58 and 306,693.40 is: 423,242.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,331.48 : 774,647.58 = 306,693.40 : x
  2. Step 2: Convert to fraction form
    561,331.48/774,647.58 = 306,693.40/x
  3. Step 3: Cross multiply
    561,331.48x = 774,647.58 × 306,693.40
  4. Step 4: Simplify right side
    561,331.48x = 237,579,300,111.97
  5. Step 5: Solve for x
    x = 237,579,300,111.97/561,331.48
  6. Step 6: Final answer
    x = 423,242.43

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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.