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Finding the Fourth Proportional to 610,783.64, 842,886.51 and 338,869.37

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Solution

The fourth proportional to 610,783.64, 842,886.51 and 338,869.37 is: 467,642.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,783.64 : 842,886.51 = 338,869.37 : x
  2. Step 2: Convert to fraction form
    610,783.64/842,886.51 = 338,869.37/x
  3. Step 3: Cross multiply
    610,783.64x = 842,886.51 × 338,869.37
  4. Step 4: Simplify right side
    610,783.64x = 285,628,421,461.66
  5. Step 5: Solve for x
    x = 285,628,421,461.66/610,783.64
  6. Step 6: Final answer
    x = 467,642.56

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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.