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Finding the Fourth Proportional to 611,928.60, 917,018.10 and 450,746.70

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Solution

The fourth proportional to 611,928.60, 917,018.10 and 450,746.70 is: 675,475.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,928.60 : 917,018.10 = 450,746.70 : x
  2. Step 2: Convert to fraction form
    611,928.60/917,018.10 = 450,746.70/x
  3. Step 3: Cross multiply
    611,928.60x = 917,018.10 × 450,746.70
  4. Step 4: Simplify right side
    611,928.60x = 413,342,882,415.27
  5. Step 5: Solve for x
    x = 413,342,882,415.27/611,928.60
  6. Step 6: Final answer
    x = 675,475.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.