Home / 786,680.09-1,085,225.49-496,651.08

Finding the Fourth Proportional to 786,680.09, 1,085,225.49 and 496,651.08

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Solution

The fourth proportional to 786,680.09, 1,085,225.49 and 496,651.08 is: 685,130.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,680.09 : 1,085,225.49 = 496,651.08 : x
  2. Step 2: Convert to fraction form
    786,680.09/1,085,225.49 = 496,651.08/x
  3. Step 3: Cross multiply
    786,680.09x = 1,085,225.49 × 496,651.08
  4. Step 4: Simplify right side
    786,680.09x = 538,978,411,652.03
  5. Step 5: Solve for x
    x = 538,978,411,652.03/786,680.09
  6. Step 6: Final answer
    x = 685,130.36

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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.