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Finding the Fourth Proportional to 406,312.80, 608,086.80 and 356,546.40

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Solution

The fourth proportional to 406,312.80, 608,086.80 and 356,546.40 is: 533,606.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,312.80 : 608,086.80 = 356,546.40 : x
  2. Step 2: Convert to fraction form
    406,312.80/608,086.80 = 356,546.40/x
  3. Step 3: Cross multiply
    406,312.80x = 608,086.80 × 356,546.40
  4. Step 4: Simplify right side
    406,312.80x = 216,811,159,427.52
  5. Step 5: Solve for x
    x = 216,811,159,427.52/406,312.80
  6. Step 6: Final answer
    x = 533,606.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.