Home / 641,396.07-885,113.53-354,916.08

Finding the Fourth Proportional to 641,396.07, 885,113.53 and 354,916.08

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Solution

The fourth proportional to 641,396.07, 885,113.53 and 354,916.08 is: 489,776.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,396.07 : 885,113.53 = 354,916.08 : x
  2. Step 2: Convert to fraction form
    641,396.07/885,113.53 = 354,916.08/x
  3. Step 3: Cross multiply
    641,396.07x = 885,113.53 × 354,916.08
  4. Step 4: Simplify right side
    641,396.07x = 314,141,023,535.27
  5. Step 5: Solve for x
    x = 314,141,023,535.27/641,396.07
  6. Step 6: Final answer
    x = 489,776.97

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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.