Home / 987,210.72-1,480,816.08-239,256.72

Finding the Fourth Proportional to 987,210.72, 1,480,816.08 and 239,256.72

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Solution

The fourth proportional to 987,210.72, 1,480,816.08 and 239,256.72 is: 358,885.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,210.72 : 1,480,816.08 = 239,256.72 : x
  2. Step 2: Convert to fraction form
    987,210.72/1,480,816.08 = 239,256.72/x
  3. Step 3: Cross multiply
    987,210.72x = 1,480,816.08 × 239,256.72
  4. Step 4: Simplify right side
    987,210.72x = 354,295,198,224.06
  5. Step 5: Solve for x
    x = 354,295,198,224.06/987,210.72
  6. Step 6: Final answer
    x = 358,885.08

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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.