Home / 916,640.50-1,264,944.86-508,718.64

Finding the Fourth Proportional to 916,640.50, 1,264,944.86 and 508,718.64

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Solution

The fourth proportional to 916,640.50, 1,264,944.86 and 508,718.64 is: 702,021.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,640.50 : 1,264,944.86 = 508,718.64 : x
  2. Step 2: Convert to fraction form
    916,640.50/1,264,944.86 = 508,718.64/x
  3. Step 3: Cross multiply
    916,640.50x = 1,264,944.86 × 508,718.64
  4. Step 4: Simplify right side
    916,640.50x = 643,501,028,854.19
  5. Step 5: Solve for x
    x = 643,501,028,854.19/916,640.50
  6. Step 6: Final answer
    x = 702,021.16

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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.