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Finding the Fourth Proportional to 555,350.87, 766,384.75 and 300,701.45

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Solution

The fourth proportional to 555,350.87, 766,384.75 and 300,701.45 is: 414,968.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,350.87 : 766,384.75 = 300,701.45 : x
  2. Step 2: Convert to fraction form
    555,350.87/766,384.75 = 300,701.45/x
  3. Step 3: Cross multiply
    555,350.87x = 766,384.75 × 300,701.45
  4. Step 4: Simplify right side
    555,350.87x = 230,453,005,582.89
  5. Step 5: Solve for x
    x = 230,453,005,582.89/555,350.87
  6. Step 6: Final answer
    x = 414,968.30

Related Problems

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Half scale
Find fourth proportional to 1,110,701.74, 1,532,769.50 and 601,402.90
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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.