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Finding the Fourth Proportional to 515,948.70, 773,923.05 and 486,918.30

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Solution

The fourth proportional to 515,948.70, 773,923.05 and 486,918.30 is: 730,377.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,948.70 : 773,923.05 = 486,918.30 : x
  2. Step 2: Convert to fraction form
    515,948.70/773,923.05 = 486,918.30/x
  3. Step 3: Cross multiply
    515,948.70x = 773,923.05 × 486,918.30
  4. Step 4: Simplify right side
    515,948.70x = 376,837,295,836.82
  5. Step 5: Solve for x
    x = 376,837,295,836.82/515,948.70
  6. Step 6: Final answer
    x = 730,377.45

Related Problems

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Half scale
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Double scale
Find fourth proportional to 515,949.70, 773,924.55 and 486,919.30
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.