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Finding the Fourth Proportional to 528,562.62, 729,421.76 and 286,847.28

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Solution

The fourth proportional to 528,562.62, 729,421.76 and 286,847.28 is: 395,852.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,562.62 : 729,421.76 = 286,847.28 : x
  2. Step 2: Convert to fraction form
    528,562.62/729,421.76 = 286,847.28/x
  3. Step 3: Cross multiply
    528,562.62x = 729,421.76 × 286,847.28
  4. Step 4: Simplify right side
    528,562.62x = 209,232,647,828.81
  5. Step 5: Solve for x
    x = 209,232,647,828.81/528,562.62
  6. Step 6: Final answer
    x = 395,852.15

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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.