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Finding the Fourth Proportional to 680,018.80, 938,396.36 and 374,075.76

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Solution

The fourth proportional to 680,018.80, 938,396.36 and 374,075.76 is: 516,208.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,018.80 : 938,396.36 = 374,075.76 : x
  2. Step 2: Convert to fraction form
    680,018.80/938,396.36 = 374,075.76/x
  3. Step 3: Cross multiply
    680,018.80x = 938,396.36 × 374,075.76
  4. Step 4: Simplify right side
    680,018.80x = 351,031,331,548.23
  5. Step 5: Solve for x
    x = 351,031,331,548.23/680,018.80
  6. Step 6: Final answer
    x = 516,208.27

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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.