Home / 918,900.15-1,377,450.36-514,289.96

Finding the Fourth Proportional to 918,900.15, 1,377,450.36 and 514,289.96

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Solution

The fourth proportional to 918,900.15, 1,377,450.36 and 514,289.96 is: 770,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,900.15 : 1,377,450.36 = 514,289.96 : x
  2. Step 2: Convert to fraction form
    918,900.15/1,377,450.36 = 514,289.96/x
  3. Step 3: Cross multiply
    918,900.15x = 1,377,450.36 × 514,289.96
  4. Step 4: Simplify right side
    918,900.15x = 708,408,888,824.57
  5. Step 5: Solve for x
    x = 708,408,888,824.57/918,900.15
  6. Step 6: Final answer
    x = 770,931.30

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1.5x scale

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.