Home / 813,947.81-1,121,953.75-641,586.29

Finding the Fourth Proportional to 813,947.81, 1,121,953.75 and 641,586.29

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Solution

The fourth proportional to 813,947.81, 1,121,953.75 and 641,586.29 is: 884,368.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,947.81 : 1,121,953.75 = 641,586.29 : x
  2. Step 2: Convert to fraction form
    813,947.81/1,121,953.75 = 641,586.29/x
  3. Step 3: Cross multiply
    813,947.81x = 1,121,953.75 × 641,586.29
  4. Step 4: Simplify right side
    813,947.81x = 719,830,136,800.35
  5. Step 5: Solve for x
    x = 719,830,136,800.35/813,947.81
  6. Step 6: Final answer
    x = 884,368.91

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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.