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Finding the Fourth Proportional to 528,617.07, 729,498.56 and 286,902.54

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Solution

The fourth proportional to 528,617.07, 729,498.56 and 286,902.54 is: 395,929.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,617.07 : 729,498.56 = 286,902.54 : x
  2. Step 2: Convert to fraction form
    528,617.07/729,498.56 = 286,902.54/x
  3. Step 3: Cross multiply
    528,617.07x = 729,498.56 × 286,902.54
  4. Step 4: Simplify right side
    528,617.07x = 209,294,988,355.83
  5. Step 5: Solve for x
    x = 209,294,988,355.83/528,617.07
  6. Step 6: Final answer
    x = 395,929.30

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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.