Home / 411,423.18-616,666.32-257,621.06

Finding the Fourth Proportional to 411,423.18, 616,666.32 and 257,621.06

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Solution

The fourth proportional to 411,423.18, 616,666.32 and 257,621.06 is: 386,138.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,423.18 : 616,666.32 = 257,621.06 : x
  2. Step 2: Convert to fraction form
    411,423.18/616,666.32 = 257,621.06/x
  3. Step 3: Cross multiply
    411,423.18x = 616,666.32 × 257,621.06
  4. Step 4: Simplify right side
    411,423.18x = 158,866,227,941.37
  5. Step 5: Solve for x
    x = 158,866,227,941.37/411,423.18
  6. Step 6: Final answer
    x = 386,138.25

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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.