Home / 788,486.40-1,182,729.60-315,511.20

Finding the Fourth Proportional to 788,486.40, 1,182,729.60 and 315,511.20

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Solution

The fourth proportional to 788,486.40, 1,182,729.60 and 315,511.20 is: 473,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,486.40 : 1,182,729.60 = 315,511.20 : x
  2. Step 2: Convert to fraction form
    788,486.40/1,182,729.60 = 315,511.20/x
  3. Step 3: Cross multiply
    788,486.40x = 1,182,729.60 × 315,511.20
  4. Step 4: Simplify right side
    788,486.40x = 373,164,435,371.52
  5. Step 5: Solve for x
    x = 373,164,435,371.52/788,486.40
  6. Step 6: Final answer
    x = 473,266.80

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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.