Home / 811,748.70-1,119,941.91-472,144.86

Finding the Fourth Proportional to 811,748.70, 1,119,941.91 and 472,144.86

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Solution

The fourth proportional to 811,748.70, 1,119,941.91 and 472,144.86 is: 651,402.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,748.70 : 1,119,941.91 = 472,144.86 : x
  2. Step 2: Convert to fraction form
    811,748.70/1,119,941.91 = 472,144.86/x
  3. Step 3: Cross multiply
    811,748.70x = 1,119,941.91 × 472,144.86
  4. Step 4: Simplify right side
    811,748.70x = 528,774,816,305.08
  5. Step 5: Solve for x
    x = 528,774,816,305.08/811,748.70
  6. Step 6: Final answer
    x = 651,402.11

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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.