Home / 771,799.78-1,065,121.68-465,871.30

Finding the Fourth Proportional to 771,799.78, 1,065,121.68 and 465,871.30

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Solution

The fourth proportional to 771,799.78, 1,065,121.68 and 465,871.30 is: 642,925.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,799.78 : 1,065,121.68 = 465,871.30 : x
  2. Step 2: Convert to fraction form
    771,799.78/1,065,121.68 = 465,871.30/x
  3. Step 3: Cross multiply
    771,799.78x = 1,065,121.68 × 465,871.30
  4. Step 4: Simplify right side
    771,799.78x = 496,209,621,719.78
  5. Step 5: Solve for x
    x = 496,209,621,719.78/771,799.78
  6. Step 6: Final answer
    x = 642,925.32

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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.