Home / 1,686,415.80-2,528,748.90-620,909.40

Finding the Fourth Proportional to 1,686,415.80, 2,528,748.90 and 620,909.40

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Solution

The fourth proportional to 1,686,415.80, 2,528,748.90 and 620,909.40 is: 931,042.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686,415.80 : 2,528,748.90 = 620,909.40 : x
  2. Step 2: Convert to fraction form
    1,686,415.80/2,528,748.90 = 620,909.40/x
  3. Step 3: Cross multiply
    1,686,415.80x = 2,528,748.90 × 620,909.40
  4. Step 4: Simplify right side
    1,686,415.80x = 1,570,123,962,249.66
  5. Step 5: Solve for x
    x = 1,570,123,962,249.66/1,686,415.80
  6. Step 6: Final answer
    x = 931,042.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.