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Finding the Fourth Proportional to 528,503.32, 729,464.16 and 324,603.10

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Solution

The fourth proportional to 528,503.32, 729,464.16 and 324,603.10 is: 448,031.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,503.32 : 729,464.16 = 324,603.10 : x
  2. Step 2: Convert to fraction form
    528,503.32/729,464.16 = 324,603.10/x
  3. Step 3: Cross multiply
    528,503.32x = 729,464.16 × 324,603.10
  4. Step 4: Simplify right side
    528,503.32x = 236,786,327,674.90
  5. Step 5: Solve for x
    x = 236,786,327,674.90/528,503.32
  6. Step 6: Final answer
    x = 448,031.86

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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.