Home / 779,990.40-1,169,985.60-219,024.90

Finding the Fourth Proportional to 779,990.40, 1,169,985.60 and 219,024.90

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Solution

The fourth proportional to 779,990.40, 1,169,985.60 and 219,024.90 is: 328,537.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,990.40 : 1,169,985.60 = 219,024.90 : x
  2. Step 2: Convert to fraction form
    779,990.40/1,169,985.60 = 219,024.90/x
  3. Step 3: Cross multiply
    779,990.40x = 1,169,985.60 × 219,024.90
  4. Step 4: Simplify right side
    779,990.40x = 256,255,979,041.44
  5. Step 5: Solve for x
    x = 256,255,979,041.44/779,990.40
  6. Step 6: Final answer
    x = 328,537.35

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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.