Home / 453,261,712.40-679,892,568.60-315,512,205.20

Finding the Fourth Proportional to 453,261,712.40, 679,892,568.60 and 315,512,205.20

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Solution

The fourth proportional to 453,261,712.40, 679,892,568.60 and 315,512,205.20 is: 473,268,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,261,712.40 : 679,892,568.60 = 315,512,205.20 : x
  2. Step 2: Convert to fraction form
    453,261,712.40/679,892,568.60 = 315,512,205.20/x
  3. Step 3: Cross multiply
    453,261,712.40x = 679,892,568.60 × 315,512,205.20
  4. Step 4: Simplify right side
    453,261,712.40x = 214,514,403,618,078,272
  5. Step 5: Solve for x
    x = 214,514,403,618,078,272/453,261,712.40
  6. Step 6: Final answer
    x = 473,268,307.80

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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.