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Finding the Fourth Proportional to 812,674.88, 1,121,494.56 and 473,376.32

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Solution

The fourth proportional to 812,674.88, 1,121,494.56 and 473,376.32 is: 653,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,674.88 : 1,121,494.56 = 473,376.32 : x
  2. Step 2: Convert to fraction form
    812,674.88/1,121,494.56 = 473,376.32/x
  3. Step 3: Cross multiply
    812,674.88x = 1,121,494.56 × 473,376.32
  4. Step 4: Simplify right side
    812,674.88x = 530,888,967,712.82
  5. Step 5: Solve for x
    x = 530,888,967,712.82/812,674.88
  6. Step 6: Final answer
    x = 653,261.20

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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.