Home / 1,139,280-1,708,511.40-340,412.64

Finding the Fourth Proportional to 1,139,280, 1,708,511.40 and 340,412.64

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Solution

The fourth proportional to 1,139,280, 1,708,511.40 and 340,412.64 is: 510,496.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,280 : 1,708,511.40 = 340,412.64 : x
  2. Step 2: Convert to fraction form
    1,139,280/1,708,511.40 = 340,412.64/x
  3. Step 3: Cross multiply
    1,139,280x = 1,708,511.40 × 340,412.64
  4. Step 4: Simplify right side
    1,139,280x = 581,598,876,144.10
  5. Step 5: Solve for x
    x = 581,598,876,144.10/1,139,280
  6. Step 6: Final answer
    x = 510,496.87

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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.