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Finding the Fourth Proportional to 528,602.56, 729,472.08 and 286,885.28

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Solution

The fourth proportional to 528,602.56, 729,472.08 and 286,885.28 is: 395,901.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,602.56 : 729,472.08 = 286,885.28 : x
  2. Step 2: Convert to fraction form
    528,602.56/729,472.08 = 286,885.28/x
  3. Step 3: Cross multiply
    528,602.56x = 729,472.08 × 286,885.28
  4. Step 4: Simplify right side
    528,602.56x = 209,274,801,922.98
  5. Step 5: Solve for x
    x = 209,274,801,922.98/528,602.56
  6. Step 6: Final answer
    x = 395,901.98

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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.