Home / 931,812.09-1,285,103.95-641,886.36

Finding the Fourth Proportional to 931,812.09, 1,285,103.95 and 641,886.36

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Solution

The fourth proportional to 931,812.09, 1,285,103.95 and 641,886.36 is: 885,254.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,812.09 : 1,285,103.95 = 641,886.36 : x
  2. Step 2: Convert to fraction form
    931,812.09/1,285,103.95 = 641,886.36/x
  3. Step 3: Cross multiply
    931,812.09x = 1,285,103.95 × 641,886.36
  4. Step 4: Simplify right side
    931,812.09x = 824,890,696,687.12
  5. Step 5: Solve for x
    x = 824,890,696,687.12/931,812.09
  6. Step 6: Final answer
    x = 885,254.34

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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.