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Finding the Fourth Proportional to 713,750.96, 985,289.28 and 499,730.24

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Solution

The fourth proportional to 713,750.96, 985,289.28 and 499,730.24 is: 689,846.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,750.96 : 985,289.28 = 499,730.24 : x
  2. Step 2: Convert to fraction form
    713,750.96/985,289.28 = 499,730.24/x
  3. Step 3: Cross multiply
    713,750.96x = 985,289.28 × 499,730.24
  4. Step 4: Simplify right side
    713,750.96x = 492,378,848,363.83
  5. Step 5: Solve for x
    x = 492,378,848,363.83/713,750.96
  6. Step 6: Final answer
    x = 689,846.85

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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.