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Finding the Fourth Proportional to 561,531.13, 774,693.21 and 346,297.57

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Solution

The fourth proportional to 561,531.13, 774,693.21 and 346,297.57 is: 477,755.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,531.13 : 774,693.21 = 346,297.57 : x
  2. Step 2: Convert to fraction form
    561,531.13/774,693.21 = 346,297.57/x
  3. Step 3: Cross multiply
    561,531.13x = 774,693.21 × 346,297.57
  4. Step 4: Simplify right side
    561,531.13x = 268,274,376,118.50
  5. Step 5: Solve for x
    x = 268,274,376,118.50/561,531.13
  6. Step 6: Final answer
    x = 477,755.13

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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.