Home / 1,087,256.90-1,630,885.35-339,205.70

Finding the Fourth Proportional to 1,087,256.90, 1,630,885.35 and 339,205.70

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Solution

The fourth proportional to 1,087,256.90, 1,630,885.35 and 339,205.70 is: 508,808.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,256.90 : 1,630,885.35 = 339,205.70 : x
  2. Step 2: Convert to fraction form
    1,087,256.90/1,630,885.35 = 339,205.70/x
  3. Step 3: Cross multiply
    1,087,256.90x = 1,630,885.35 × 339,205.70
  4. Step 4: Simplify right side
    1,087,256.90x = 553,205,606,766.50
  5. Step 5: Solve for x
    x = 553,205,606,766.50/1,087,256.90
  6. Step 6: Final answer
    x = 508,808.55

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Half scale
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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.