Home / 767,528.80-1,151,293.20-486,210.40

Finding the Fourth Proportional to 767,528.80, 1,151,293.20 and 486,210.40

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Solution

The fourth proportional to 767,528.80, 1,151,293.20 and 486,210.40 is: 729,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,528.80 : 1,151,293.20 = 486,210.40 : x
  2. Step 2: Convert to fraction form
    767,528.80/1,151,293.20 = 486,210.40/x
  3. Step 3: Cross multiply
    767,528.80x = 1,151,293.20 × 486,210.40
  4. Step 4: Simplify right side
    767,528.80x = 559,770,727,289.28
  5. Step 5: Solve for x
    x = 559,770,727,289.28/767,528.80
  6. Step 6: Final answer
    x = 729,315.60

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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.