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Finding the Fourth Proportional to 528,678.34, 729,576.82 and 286,960.96

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Solution

The fourth proportional to 528,678.34, 729,576.82 and 286,960.96 is: 396,006.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,678.34 : 729,576.82 = 286,960.96 : x
  2. Step 2: Convert to fraction form
    528,678.34/729,576.82 = 286,960.96/x
  3. Step 3: Cross multiply
    528,678.34x = 729,576.82 × 286,960.96
  4. Step 4: Simplify right side
    528,678.34x = 209,360,064,660.95
  5. Step 5: Solve for x
    x = 209,360,064,660.95/528,678.34
  6. Step 6: Final answer
    x = 396,006.51

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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.