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Finding the Fourth Proportional to 556,520.40, 767,998.08 and 314,797.76

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Solution

The fourth proportional to 556,520.40, 767,998.08 and 314,797.76 is: 434,420.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,520.40 : 767,998.08 = 314,797.76 : x
  2. Step 2: Convert to fraction form
    556,520.40/767,998.08 = 314,797.76/x
  3. Step 3: Cross multiply
    556,520.40x = 767,998.08 × 314,797.76
  4. Step 4: Simplify right side
    556,520.40x = 241,764,075,268.30
  5. Step 5: Solve for x
    x = 241,764,075,268.30/556,520.40
  6. Step 6: Final answer
    x = 434,420.87

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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.