Home / 543,290.78-749,788.74-317,009.18

Finding the Fourth Proportional to 543,290.78, 749,788.74 and 317,009.18

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Solution

The fourth proportional to 543,290.78, 749,788.74 and 317,009.18 is: 437,500.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,290.78 : 749,788.74 = 317,009.18 : x
  2. Step 2: Convert to fraction form
    543,290.78/749,788.74 = 317,009.18/x
  3. Step 3: Cross multiply
    543,290.78x = 749,788.74 × 317,009.18
  4. Step 4: Simplify right side
    543,290.78x = 237,689,913,640.63
  5. Step 5: Solve for x
    x = 237,689,913,640.63/543,290.78
  6. Step 6: Final answer
    x = 437,500.36

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1.5x scale

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.