Home / 903,172.11-1,245,447.05-631,140.29

Finding the Fourth Proportional to 903,172.11, 1,245,447.05 and 631,140.29

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Solution

The fourth proportional to 903,172.11, 1,245,447.05 and 631,140.29 is: 870,323.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,172.11 : 1,245,447.05 = 631,140.29 : x
  2. Step 2: Convert to fraction form
    903,172.11/1,245,447.05 = 631,140.29/x
  3. Step 3: Cross multiply
    903,172.11x = 1,245,447.05 × 631,140.29
  4. Step 4: Simplify right side
    903,172.11x = 786,051,802,933.71
  5. Step 5: Solve for x
    x = 786,051,802,933.71/903,172.11
  6. Step 6: Final answer
    x = 870,323.38

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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.