Home / 763,615.60-1,145,423.40-480,180.40

Finding the Fourth Proportional to 763,615.60, 1,145,423.40 and 480,180.40

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Solution

The fourth proportional to 763,615.60, 1,145,423.40 and 480,180.40 is: 720,270.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,615.60 : 1,145,423.40 = 480,180.40 : x
  2. Step 2: Convert to fraction form
    763,615.60/1,145,423.40 = 480,180.40/x
  3. Step 3: Cross multiply
    763,615.60x = 1,145,423.40 × 480,180.40
  4. Step 4: Simplify right side
    763,615.60x = 550,009,866,381.36
  5. Step 5: Solve for x
    x = 550,009,866,381.36/763,615.60
  6. Step 6: Final answer
    x = 720,270.60

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Double scale
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Similar ratio
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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.