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Finding the Fourth Proportional to 647,407.50, 893,412.09 and 360,945.06

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Solution

The fourth proportional to 647,407.50, 893,412.09 and 360,945.06 is: 498,098.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,407.50 : 893,412.09 = 360,945.06 : x
  2. Step 2: Convert to fraction form
    647,407.50/893,412.09 = 360,945.06/x
  3. Step 3: Cross multiply
    647,407.50x = 893,412.09 × 360,945.06
  4. Step 4: Simplify right side
    647,407.50x = 322,472,680,429.78
  5. Step 5: Solve for x
    x = 322,472,680,429.78/647,407.50
  6. Step 6: Final answer
    x = 498,098.46

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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.