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Finding the Fourth Proportional to 586,444.84, 809,298.82 and 318,174.76

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Solution

The fourth proportional to 586,444.84, 809,298.82 and 318,174.76 is: 439,083.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,444.84 : 809,298.82 = 318,174.76 : x
  2. Step 2: Convert to fraction form
    586,444.84/809,298.82 = 318,174.76/x
  3. Step 3: Cross multiply
    586,444.84x = 809,298.82 × 318,174.76
  4. Step 4: Simplify right side
    586,444.84x = 257,498,457,821.78
  5. Step 5: Solve for x
    x = 257,498,457,821.78/586,444.84
  6. Step 6: Final answer
    x = 439,083.85

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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.