Home / 779,650.40-1,169,475.60-380,547.20

Finding the Fourth Proportional to 779,650.40, 1,169,475.60 and 380,547.20

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Solution

The fourth proportional to 779,650.40, 1,169,475.60 and 380,547.20 is: 570,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,650.40 : 1,169,475.60 = 380,547.20 : x
  2. Step 2: Convert to fraction form
    779,650.40/1,169,475.60 = 380,547.20/x
  3. Step 3: Cross multiply
    779,650.40x = 1,169,475.60 × 380,547.20
  4. Step 4: Simplify right side
    779,650.40x = 445,040,665,048.32
  5. Step 5: Solve for x
    x = 445,040,665,048.32/779,650.40
  6. Step 6: Final answer
    x = 570,820.80

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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.