Home / 724,661.40-1,085,679.90-619,685.40

Finding the Fourth Proportional to 724,661.40, 1,085,679.90 and 619,685.40

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Solution

The fourth proportional to 724,661.40, 1,085,679.90 and 619,685.40 is: 928,405.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,661.40 : 1,085,679.90 = 619,685.40 : x
  2. Step 2: Convert to fraction form
    724,661.40/1,085,679.90 = 619,685.40/x
  3. Step 3: Cross multiply
    724,661.40x = 1,085,679.90 × 619,685.40
  4. Step 4: Simplify right side
    724,661.40x = 672,779,983,103.46
  5. Step 5: Solve for x
    x = 672,779,983,103.46/724,661.40
  6. Step 6: Final answer
    x = 928,405.99

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1.5x scale

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.