Home / 777,341.86-1,072,160.76-515,223.12

Finding the Fourth Proportional to 777,341.86, 1,072,160.76 and 515,223.12

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Solution

The fourth proportional to 777,341.86, 1,072,160.76 and 515,223.12 is: 710,629.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,341.86 : 1,072,160.76 = 515,223.12 : x
  2. Step 2: Convert to fraction form
    777,341.86/1,072,160.76 = 515,223.12/x
  3. Step 3: Cross multiply
    777,341.86x = 1,072,160.76 × 515,223.12
  4. Step 4: Simplify right side
    777,341.86x = 552,402,008,932.43
  5. Step 5: Solve for x
    x = 552,402,008,932.43/777,341.86
  6. Step 6: Final answer
    x = 710,629.44

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Double scale
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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.