Home / 763,558.40-1,145,337.60-720,012.80

Finding the Fourth Proportional to 763,558.40, 1,145,337.60 and 720,012.80

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Solution

The fourth proportional to 763,558.40, 1,145,337.60 and 720,012.80 is: 1,080,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,558.40 : 1,145,337.60 = 720,012.80 : x
  2. Step 2: Convert to fraction form
    763,558.40/1,145,337.60 = 720,012.80/x
  3. Step 3: Cross multiply
    763,558.40x = 1,145,337.60 × 720,012.80
  4. Step 4: Simplify right side
    763,558.40x = 824,657,732,321.28
  5. Step 5: Solve for x
    x = 824,657,732,321.28/763,558.40
  6. Step 6: Final answer
    x = 1,080,019.20

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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.