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Finding the Fourth Proportional to 528,710.97, 729,616.16 and 286,988.37

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Solution

The fourth proportional to 528,710.97, 729,616.16 and 286,988.37 is: 396,041.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,710.97 : 729,616.16 = 286,988.37 : x
  2. Step 2: Convert to fraction form
    528,710.97/729,616.16 = 286,988.37/x
  3. Step 3: Cross multiply
    528,710.97x = 729,616.16 × 286,988.37
  4. Step 4: Simplify right side
    528,710.97x = 209,391,348,851.16
  5. Step 5: Solve for x
    x = 209,391,348,851.16/528,710.97
  6. Step 6: Final answer
    x = 396,041.24

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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.