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Finding the Fourth Proportional to 528,588.76, 729,452.86 and 286,871.28

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Solution

The fourth proportional to 528,588.76, 729,452.86 and 286,871.28 is: 395,882.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,588.76 : 729,452.86 = 286,871.28 : x
  2. Step 2: Convert to fraction form
    528,588.76/729,452.86 = 286,871.28/x
  3. Step 3: Cross multiply
    528,588.76x = 729,452.86 × 286,871.28
  4. Step 4: Simplify right side
    528,588.76x = 209,259,075,647.86
  5. Step 5: Solve for x
    x = 209,259,075,647.86/528,588.76
  6. Step 6: Final answer
    x = 395,882.57

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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.