Home / 788,489.40-1,182,734.10-315,514.20

Finding the Fourth Proportional to 788,489.40, 1,182,734.10 and 315,514.20

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Solution

The fourth proportional to 788,489.40, 1,182,734.10 and 315,514.20 is: 473,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,489.40 : 1,182,734.10 = 315,514.20 : x
  2. Step 2: Convert to fraction form
    788,489.40/1,182,734.10 = 315,514.20/x
  3. Step 3: Cross multiply
    788,489.40x = 1,182,734.10 × 315,514.20
  4. Step 4: Simplify right side
    788,489.40x = 373,169,403,374.22
  5. Step 5: Solve for x
    x = 373,169,403,374.22/788,489.40
  6. Step 6: Final answer
    x = 473,271.30

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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.