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Finding the Fourth Proportional to 813,672.63, 1,122,894.72 and 451,130.22

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Solution

The fourth proportional to 813,672.63, 1,122,894.72 and 451,130.22 is: 622,574.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,672.63 : 1,122,894.72 = 451,130.22 : x
  2. Step 2: Convert to fraction form
    813,672.63/1,122,894.72 = 451,130.22/x
  3. Step 3: Cross multiply
    813,672.63x = 1,122,894.72 × 451,130.22
  4. Step 4: Simplify right side
    813,672.63x = 506,571,742,070.44
  5. Step 5: Solve for x
    x = 506,571,742,070.44/813,672.63
  6. Step 6: Final answer
    x = 622,574.39

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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.