Home / 543,348,212.70-815,022,319.05-505,084,460.70

Finding the Fourth Proportional to 543,348,212.70, 815,022,319.05 and 505,084,460.70

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Solution

The fourth proportional to 543,348,212.70, 815,022,319.05 and 505,084,460.70 is: 757,626,691.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,348,212.70 : 815,022,319.05 = 505,084,460.70 : x
  2. Step 2: Convert to fraction form
    543,348,212.70/815,022,319.05 = 505,084,460.70/x
  3. Step 3: Cross multiply
    543,348,212.70x = 815,022,319.05 × 505,084,460.70
  4. Step 4: Simplify right side
    543,348,212.70x = 411,655,108,475,832,576
  5. Step 5: Solve for x
    x = 411,655,108,475,832,576/543,348,212.70
  6. Step 6: Final answer
    x = 757,626,691.05

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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.