Home / 781,354.04-1,078,217.58-437,131.16

Finding the Fourth Proportional to 781,354.04, 1,078,217.58 and 437,131.16

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Solution

The fourth proportional to 781,354.04, 1,078,217.58 and 437,131.16 is: 603,212.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,354.04 : 1,078,217.58 = 437,131.16 : x
  2. Step 2: Convert to fraction form
    781,354.04/1,078,217.58 = 437,131.16/x
  3. Step 3: Cross multiply
    781,354.04x = 1,078,217.58 × 437,131.16
  4. Step 4: Simplify right side
    781,354.04x = 471,322,501,477.79
  5. Step 5: Solve for x
    x = 471,322,501,477.79/781,354.04
  6. Step 6: Final answer
    x = 603,212.47

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Half scale
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Double scale
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Similar ratio
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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.