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Finding the Fourth Proportional to 528,537.94, 729,384.28 and 286,820.46

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Solution

The fourth proportional to 528,537.94, 729,384.28 and 286,820.46 is: 395,813.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,537.94 : 729,384.28 = 286,820.46 : x
  2. Step 2: Convert to fraction form
    528,537.94/729,384.28 = 286,820.46/x
  3. Step 3: Cross multiply
    528,537.94x = 729,384.28 × 286,820.46
  4. Step 4: Simplify right side
    528,537.94x = 209,202,333,989.32
  5. Step 5: Solve for x
    x = 209,202,333,989.32/528,537.94
  6. Step 6: Final answer
    x = 395,813.27

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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.