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Finding the Fourth Proportional to 528,772.11, 729,628.53 and 302,373.87

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Solution

The fourth proportional to 528,772.11, 729,628.53 and 302,373.87 is: 417,231.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,772.11 : 729,628.53 = 302,373.87 : x
  2. Step 2: Convert to fraction form
    528,772.11/729,628.53 = 302,373.87/x
  3. Step 3: Cross multiply
    528,772.11x = 729,628.53 × 302,373.87
  4. Step 4: Simplify right side
    528,772.11x = 220,620,602,278.51
  5. Step 5: Solve for x
    x = 220,620,602,278.51/528,772.11
  6. Step 6: Final answer
    x = 417,231.92

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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.