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Finding the Fourth Proportional to 910,800, 1,256,888.44 and 502,891.68

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Solution

The fourth proportional to 910,800, 1,256,888.44 and 502,891.68 is: 693,981.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,800 : 1,256,888.44 = 502,891.68 : x
  2. Step 2: Convert to fraction form
    910,800/1,256,888.44 = 502,891.68/x
  3. Step 3: Cross multiply
    910,800x = 1,256,888.44 × 502,891.68
  4. Step 4: Simplify right side
    910,800x = 632,078,739,164.18
  5. Step 5: Solve for x
    x = 632,078,739,164.18/910,800
  6. Step 6: Final answer
    x = 693,981.93

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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.