Home / 1,388,423-2,081,837.46-546,515.48

Finding the Fourth Proportional to 1,388,423, 2,081,837.46 and 546,515.48

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Solution

The fourth proportional to 1,388,423, 2,081,837.46 and 546,515.48 is: 819,459.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,423 : 2,081,837.46 = 546,515.48 : x
  2. Step 2: Convert to fraction form
    1,388,423/2,081,837.46 = 546,515.48/x
  3. Step 3: Cross multiply
    1,388,423x = 2,081,837.46 × 546,515.48
  4. Step 4: Simplify right side
    1,388,423x = 1,137,756,398,733.88
  5. Step 5: Solve for x
    x = 1,137,756,398,733.88/1,388,423
  6. Step 6: Final answer
    x = 819,459.49

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Double scale
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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.