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Finding the Fourth Proportional to 528,737.60, 729,646.26 and 299,290.31

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Solution

The fourth proportional to 528,737.60, 729,646.26 and 299,290.31 is: 413,014.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,737.60 : 729,646.26 = 299,290.31 : x
  2. Step 2: Convert to fraction form
    528,737.60/729,646.26 = 299,290.31/x
  3. Step 3: Cross multiply
    528,737.60x = 729,646.26 × 299,290.31
  4. Step 4: Simplify right side
    528,737.60x = 218,376,051,697.51
  5. Step 5: Solve for x
    x = 218,376,051,697.51/528,737.60
  6. Step 6: Final answer
    x = 413,014.04

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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.