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Finding the Fourth Proportional to 528,017.43, 728,664.09 and 286,299.93

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Solution

The fourth proportional to 528,017.43, 728,664.09 and 286,299.93 is: 395,093.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,017.43 : 728,664.09 = 286,299.93 : x
  2. Step 2: Convert to fraction form
    528,017.43/728,664.09 = 286,299.93/x
  3. Step 3: Cross multiply
    528,017.43x = 728,664.09 × 286,299.93
  4. Step 4: Simplify right side
    528,017.43x = 208,616,477,960.51
  5. Step 5: Solve for x
    x = 208,616,477,960.51/528,017.43
  6. Step 6: Final answer
    x = 395,093.92

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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.