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Finding the Fourth Proportional to 528,250.71, 728,966.28 and 286,525.25

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Solution

The fourth proportional to 528,250.71, 728,966.28 and 286,525.25 is: 395,394.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,250.71 : 728,966.28 = 286,525.25 : x
  2. Step 2: Convert to fraction form
    528,250.71/728,966.28 = 286,525.25/x
  3. Step 3: Cross multiply
    528,250.71x = 728,966.28 × 286,525.25
  4. Step 4: Simplify right side
    528,250.71x = 208,867,245,781.83
  5. Step 5: Solve for x
    x = 208,867,245,781.83/528,250.71
  6. Step 6: Final answer
    x = 395,394.16

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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.