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Finding the Fourth Proportional to 515,029.80, 772,544.70 and 347,068.20

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Solution

The fourth proportional to 515,029.80, 772,544.70 and 347,068.20 is: 520,602.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,029.80 : 772,544.70 = 347,068.20 : x
  2. Step 2: Convert to fraction form
    515,029.80/772,544.70 = 347,068.20/x
  3. Step 3: Cross multiply
    515,029.80x = 772,544.70 × 347,068.20
  4. Step 4: Simplify right side
    515,029.80x = 268,125,698,448.54
  5. Step 5: Solve for x
    x = 268,125,698,448.54/515,029.80
  6. Step 6: Final answer
    x = 520,602.30

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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.