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Finding the Fourth Proportional to 528,074.88, 727,511.40 and 432,021.84

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Solution

The fourth proportional to 528,074.88, 727,511.40 and 432,021.84 is: 595,182.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,074.88 : 727,511.40 = 432,021.84 : x
  2. Step 2: Convert to fraction form
    528,074.88/727,511.40 = 432,021.84/x
  3. Step 3: Cross multiply
    528,074.88x = 727,511.40 × 432,021.84
  4. Step 4: Simplify right side
    528,074.88x = 314,300,813,648.98
  5. Step 5: Solve for x
    x = 314,300,813,648.98/528,074.88
  6. Step 6: Final answer
    x = 595,182.28

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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.