Home / 987,210.30-1,480,815.43-239,256.30

Finding the Fourth Proportional to 987,210.30, 1,480,815.43 and 239,256.30

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Solution

The fourth proportional to 987,210.30, 1,480,815.43 and 239,256.30 is: 358,884.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,210.30 : 1,480,815.43 = 239,256.30 : x
  2. Step 2: Convert to fraction form
    987,210.30/1,480,815.43 = 239,256.30/x
  3. Step 3: Cross multiply
    987,210.30x = 1,480,815.43 × 239,256.30
  4. Step 4: Simplify right side
    987,210.30x = 354,294,420,764.71
  5. Step 5: Solve for x
    x = 354,294,420,764.71/987,210.30
  6. Step 6: Final answer
    x = 358,884.45

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Half scale
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Double scale
Find fourth proportional to 987,211.30, 1,480,816.93 and 239,257.30
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.