Home / 623,932.92-861,165-405,762.12

Finding the Fourth Proportional to 623,932.92, 861,165 and 405,762.12

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Solution

The fourth proportional to 623,932.92, 861,165 and 405,762.12 is: 560,041.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,932.92 : 861,165 = 405,762.12 : x
  2. Step 2: Convert to fraction form
    623,932.92/861,165 = 405,762.12/x
  3. Step 3: Cross multiply
    623,932.92x = 861,165 × 405,762.12
  4. Step 4: Simplify right side
    623,932.92x = 349,428,136,069.80
  5. Step 5: Solve for x
    x = 349,428,136,069.80/623,932.92
  6. Step 6: Final answer
    x = 560,041.19

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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.