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Finding the Fourth Proportional to 677,971.12, 935,611.63 and 372,075.96

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Solution

The fourth proportional to 677,971.12, 935,611.63 and 372,075.96 is: 513,471.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,971.12 : 935,611.63 = 372,075.96 : x
  2. Step 2: Convert to fraction form
    677,971.12/935,611.63 = 372,075.96/x
  3. Step 3: Cross multiply
    677,971.12x = 935,611.63 × 372,075.96
  4. Step 4: Simplify right side
    677,971.12x = 348,118,593,559.04
  5. Step 5: Solve for x
    x = 348,118,593,559.04/677,971.12
  6. Step 6: Final answer
    x = 513,471.13

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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.