Home / 685,816.32-946,434.11-379,897.39

Finding the Fourth Proportional to 685,816.32, 946,434.11 and 379,897.39

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Solution

The fourth proportional to 685,816.32, 946,434.11 and 379,897.39 is: 524,262.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,816.32 : 946,434.11 = 379,897.39 : x
  2. Step 2: Convert to fraction form
    685,816.32/946,434.11 = 379,897.39/x
  3. Step 3: Cross multiply
    685,816.32x = 946,434.11 × 379,897.39
  4. Step 4: Simplify right side
    685,816.32x = 359,547,846,779.63
  5. Step 5: Solve for x
    x = 359,547,846,779.63/685,816.32
  6. Step 6: Final answer
    x = 524,262.60

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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.