Home / 1,339,381.80-2,009,072.70-772,511.40

Finding the Fourth Proportional to 1,339,381.80, 2,009,072.70 and 772,511.40

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Solution

The fourth proportional to 1,339,381.80, 2,009,072.70 and 772,511.40 is: 1,158,767.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,381.80 : 2,009,072.70 = 772,511.40 : x
  2. Step 2: Convert to fraction form
    1,339,381.80/2,009,072.70 = 772,511.40/x
  3. Step 3: Cross multiply
    1,339,381.80x = 2,009,072.70 × 772,511.40
  4. Step 4: Simplify right side
    1,339,381.80x = 1,552,031,564,178.78
  5. Step 5: Solve for x
    x = 1,552,031,564,178.78/1,339,381.80
  6. Step 6: Final answer
    x = 1,158,767.10

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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.