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Finding the Fourth Proportional to 586,598.45, 809,505.84 and 318,326.45

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Solution

The fourth proportional to 586,598.45, 809,505.84 and 318,326.45 is: 439,290.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,598.45 : 809,505.84 = 318,326.45 : x
  2. Step 2: Convert to fraction form
    586,598.45/809,505.84 = 318,326.45/x
  3. Step 3: Cross multiply
    586,598.45x = 809,505.84 × 318,326.45
  4. Step 4: Simplify right side
    586,598.45x = 257,687,116,253.94
  5. Step 5: Solve for x
    x = 257,687,116,253.94/586,598.45
  6. Step 6: Final answer
    x = 439,290.49

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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.