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Finding the Fourth Proportional to 665,297.95, 918,111.54 and 359,374.33

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Solution

The fourth proportional to 665,297.95, 918,111.54 and 359,374.33 is: 495,936.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,297.95 : 918,111.54 = 359,374.33 : x
  2. Step 2: Convert to fraction form
    665,297.95/918,111.54 = 359,374.33/x
  3. Step 3: Cross multiply
    665,297.95x = 918,111.54 × 359,374.33
  4. Step 4: Simplify right side
    665,297.95x = 329,945,719,552.77
  5. Step 5: Solve for x
    x = 329,945,719,552.77/665,297.95
  6. Step 6: Final answer
    x = 495,936.77

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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.