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Finding the Fourth Proportional to 586,588.30, 809,491.86 and 318,316.30

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Solution

The fourth proportional to 586,588.30, 809,491.86 and 318,316.30 is: 439,276.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,588.30 : 809,491.86 = 318,316.30 : x
  2. Step 2: Convert to fraction form
    586,588.30/809,491.86 = 318,316.30/x
  3. Step 3: Cross multiply
    586,588.30x = 809,491.86 × 318,316.30
  4. Step 4: Simplify right side
    586,588.30x = 257,674,453,755.32
  5. Step 5: Solve for x
    x = 257,674,453,755.32/586,588.30
  6. Step 6: Final answer
    x = 439,276.50

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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.