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Finding the Fourth Proportional to 528,045.84, 728,741.88 and 301,686.48

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Solution

The fourth proportional to 528,045.84, 728,741.88 and 301,686.48 is: 416,349.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,045.84 : 728,741.88 = 301,686.48 : x
  2. Step 2: Convert to fraction form
    528,045.84/728,741.88 = 301,686.48/x
  3. Step 3: Cross multiply
    528,045.84x = 728,741.88 × 301,686.48
  4. Step 4: Simplify right side
    528,045.84x = 219,851,572,605.78
  5. Step 5: Solve for x
    x = 219,851,572,605.78/528,045.84
  6. Step 6: Final answer
    x = 416,349.41

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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.