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Finding the Fourth Proportional to 660,917.84, 912,072.15 and 359,111.84

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Solution

The fourth proportional to 660,917.84, 912,072.15 and 359,111.84 is: 495,577.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,917.84 : 912,072.15 = 359,111.84 : x
  2. Step 2: Convert to fraction form
    660,917.84/912,072.15 = 359,111.84/x
  3. Step 3: Cross multiply
    660,917.84x = 912,072.15 × 359,111.84
  4. Step 4: Simplify right side
    660,917.84x = 327,535,903,438.90
  5. Step 5: Solve for x
    x = 327,535,903,438.90/660,917.84
  6. Step 6: Final answer
    x = 495,577.34

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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.