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Finding the Fourth Proportional to 561,322.96, 775,445.28 and 485,740.24

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Solution

The fourth proportional to 561,322.96, 775,445.28 and 485,740.24 is: 671,030.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,322.96 : 775,445.28 = 485,740.24 : x
  2. Step 2: Convert to fraction form
    561,322.96/775,445.28 = 485,740.24/x
  3. Step 3: Cross multiply
    561,322.96x = 775,445.28 × 485,740.24
  4. Step 4: Simplify right side
    561,322.96x = 376,664,976,414.07
  5. Step 5: Solve for x
    x = 376,664,976,414.07/561,322.96
  6. Step 6: Final answer
    x = 671,030.77

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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.