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Finding the Fourth Proportional to 618,710.77, 928,364.24 and 319,205.17

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Solution

The fourth proportional to 618,710.77, 928,364.24 and 319,205.17 is: 478,961.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,710.77 : 928,364.24 = 319,205.17 : x
  2. Step 2: Convert to fraction form
    618,710.77/928,364.24 = 319,205.17/x
  3. Step 3: Cross multiply
    618,710.77x = 928,364.24 × 319,205.17
  4. Step 4: Simplify right side
    618,710.77x = 296,338,665,051.12
  5. Step 5: Solve for x
    x = 296,338,665,051.12/618,710.77
  6. Step 6: Final answer
    x = 478,961.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.