Home / 1,312,406.20-1,811,355.42-768,510.24

Finding the Fourth Proportional to 1,312,406.20, 1,811,355.42 and 768,510.24

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Solution

The fourth proportional to 1,312,406.20, 1,811,355.42 and 768,510.24 is: 1,060,681.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,406.20 : 1,811,355.42 = 768,510.24 : x
  2. Step 2: Convert to fraction form
    1,312,406.20/1,811,355.42 = 768,510.24/x
  3. Step 3: Cross multiply
    1,312,406.20x = 1,811,355.42 × 768,510.24
  4. Step 4: Simplify right side
    1,312,406.20x = 1,392,045,188,549.50
  5. Step 5: Solve for x
    x = 1,392,045,188,549.50/1,312,406.20
  6. Step 6: Final answer
    x = 1,060,681.66

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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.