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Finding the Fourth Proportional to 586,319.40, 809,123.76 and 331,665.12

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Solution

The fourth proportional to 586,319.40, 809,123.76 and 331,665.12 is: 457,699.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,319.40 : 809,123.76 = 331,665.12 : x
  2. Step 2: Convert to fraction form
    586,319.40/809,123.76 = 331,665.12/x
  3. Step 3: Cross multiply
    586,319.40x = 809,123.76 × 331,665.12
  4. Step 4: Simplify right side
    586,319.40x = 268,358,128,955.25
  5. Step 5: Solve for x
    x = 268,358,128,955.25/586,319.40
  6. Step 6: Final answer
    x = 457,699.56

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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.