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Finding the Fourth Proportional to 528,348.72, 728,948.96 and 298,883.76

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Solution

The fourth proportional to 528,348.72, 728,948.96 and 298,883.76 is: 412,362.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,348.72 : 728,948.96 = 298,883.76 : x
  2. Step 2: Convert to fraction form
    528,348.72/728,948.96 = 298,883.76/x
  3. Step 3: Cross multiply
    528,348.72x = 728,948.96 × 298,883.76
  4. Step 4: Simplify right side
    528,348.72x = 217,871,006,012.89
  5. Step 5: Solve for x
    x = 217,871,006,012.89/528,348.72
  6. Step 6: Final answer
    x = 412,362.13

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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.