Home / 770,347.20-1,155,923.78-315,276.24

Finding the Fourth Proportional to 770,347.20, 1,155,923.78 and 315,276.24

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Solution

The fourth proportional to 770,347.20, 1,155,923.78 and 315,276.24 is: 473,079.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,347.20 : 1,155,923.78 = 315,276.24 : x
  2. Step 2: Convert to fraction form
    770,347.20/1,155,923.78 = 315,276.24/x
  3. Step 3: Cross multiply
    770,347.20x = 1,155,923.78 × 315,276.24
  4. Step 4: Simplify right side
    770,347.20x = 364,435,303,084.99
  5. Step 5: Solve for x
    x = 364,435,303,084.99/770,347.20
  6. Step 6: Final answer
    x = 473,079.29

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Double scale
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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.