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Finding the Fourth Proportional to 528,858.30, 730,425.36 and 356,478.96

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Solution

The fourth proportional to 528,858.30, 730,425.36 and 356,478.96 is: 492,346.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,858.30 : 730,425.36 = 356,478.96 : x
  2. Step 2: Convert to fraction form
    528,858.30/730,425.36 = 356,478.96/x
  3. Step 3: Cross multiply
    528,858.30x = 730,425.36 × 356,478.96
  4. Step 4: Simplify right side
    528,858.30x = 260,381,272,690.43
  5. Step 5: Solve for x
    x = 260,381,272,690.43/528,858.30
  6. Step 6: Final answer
    x = 492,346.01

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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.