Home / 987,210.80-1,480,816.18-239,256.80

Finding the Fourth Proportional to 987,210.80, 1,480,816.18 and 239,256.80

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Solution

The fourth proportional to 987,210.80, 1,480,816.18 and 239,256.80 is: 358,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,210.80 : 1,480,816.18 = 239,256.80 : x
  2. Step 2: Convert to fraction form
    987,210.80/1,480,816.18 = 239,256.80/x
  3. Step 3: Cross multiply
    987,210.80x = 1,480,816.18 × 239,256.80
  4. Step 4: Simplify right side
    987,210.80x = 354,295,340,615.02
  5. Step 5: Solve for x
    x = 354,295,340,615.02/987,210.80
  6. Step 6: Final answer
    x = 358,885.20

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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.