Home / 987,221.81-1,480,832.73-239,267.81

Finding the Fourth Proportional to 987,221.81, 1,480,832.73 and 239,267.81

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Solution

The fourth proportional to 987,221.81, 1,480,832.73 and 239,267.81 is: 358,901.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,221.81 : 1,480,832.73 = 239,267.81 : x
  2. Step 2: Convert to fraction form
    987,221.81/1,480,832.73 = 239,267.81/x
  3. Step 3: Cross multiply
    987,221.81x = 1,480,832.73 × 239,267.81
  4. Step 4: Simplify right side
    987,221.81x = 354,315,607,985.50
  5. Step 5: Solve for x
    x = 354,315,607,985.50/987,221.81
  6. Step 6: Final answer
    x = 358,901.72

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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.