Home / 916,640.06-1,264,944.25-508,718.21

Finding the Fourth Proportional to 916,640.06, 1,264,944.25 and 508,718.21

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Solution

The fourth proportional to 916,640.06, 1,264,944.25 and 508,718.21 is: 702,020.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,640.06 : 1,264,944.25 = 508,718.21 : x
  2. Step 2: Convert to fraction form
    916,640.06/1,264,944.25 = 508,718.21/x
  3. Step 3: Cross multiply
    916,640.06x = 1,264,944.25 × 508,718.21
  4. Step 4: Simplify right side
    916,640.06x = 643,500,174,609.79
  5. Step 5: Solve for x
    x = 643,500,174,609.79/916,640.06
  6. Step 6: Final answer
    x = 702,020.57

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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.