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Finding the Fourth Proportional to 638,762.10, 957,329.10 and 339,386.10

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Solution

The fourth proportional to 638,762.10, 957,329.10 and 339,386.10 is: 508,646.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,762.10 : 957,329.10 = 339,386.10 : x
  2. Step 2: Convert to fraction form
    638,762.10/957,329.10 = 339,386.10/x
  3. Step 3: Cross multiply
    638,762.10x = 957,329.10 × 339,386.10
  4. Step 4: Simplify right side
    638,762.10x = 324,904,189,665.51
  5. Step 5: Solve for x
    x = 324,904,189,665.51/638,762.10
  6. Step 6: Final answer
    x = 508,646.63

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1.5x scale

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.