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Finding the Fourth Proportional to 586,346.46, 809,159.67 and 318,074.46

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Solution

The fourth proportional to 586,346.46, 809,159.67 and 318,074.46 is: 438,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,346.46 : 809,159.67 = 318,074.46 : x
  2. Step 2: Convert to fraction form
    586,346.46/809,159.67 = 318,074.46/x
  3. Step 3: Cross multiply
    586,346.46x = 809,159.67 × 318,074.46
  4. Step 4: Simplify right side
    586,346.46x = 257,373,025,089.03
  5. Step 5: Solve for x
    x = 257,373,025,089.03/586,346.46
  6. Step 6: Final answer
    x = 438,943.60

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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.