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Finding the Fourth Proportional to 555,728.33, 766,905.85 and 301,079.51

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Solution

The fourth proportional to 555,728.33, 766,905.85 and 301,079.51 is: 415,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,728.33 : 766,905.85 = 301,079.51 : x
  2. Step 2: Convert to fraction form
    555,728.33/766,905.85 = 301,079.51/x
  3. Step 3: Cross multiply
    555,728.33x = 766,905.85 × 301,079.51
  4. Step 4: Simplify right side
    555,728.33x = 230,899,637,946.00
  5. Step 5: Solve for x
    x = 230,899,637,946.00/555,728.33
  6. Step 6: Final answer
    x = 415,490.14

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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.