Home / 453,246,506.40-679,869,759.60-315,496,999.20

Finding the Fourth Proportional to 453,246,506.40, 679,869,759.60 and 315,496,999.20

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Solution

The fourth proportional to 453,246,506.40, 679,869,759.60 and 315,496,999.20 is: 473,245,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,246,506.40 : 679,869,759.60 = 315,496,999.20 : x
  2. Step 2: Convert to fraction form
    453,246,506.40/679,869,759.60 = 315,496,999.20/x
  3. Step 3: Cross multiply
    453,246,506.40x = 679,869,759.60 × 315,496,999.20
  4. Step 4: Simplify right side
    453,246,506.40x = 214,496,869,000,625,376
  5. Step 5: Solve for x
    x = 214,496,869,000,625,376/453,246,506.40
  6. Step 6: Final answer
    x = 473,245,498.80

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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.