Home / 772,208.12-1,157,303.38-430,637.91

Finding the Fourth Proportional to 772,208.12, 1,157,303.38 and 430,637.91

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Solution

The fourth proportional to 772,208.12, 1,157,303.38 and 430,637.91 is: 645,394.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,208.12 : 1,157,303.38 = 430,637.91 : x
  2. Step 2: Convert to fraction form
    772,208.12/1,157,303.38 = 430,637.91/x
  3. Step 3: Cross multiply
    772,208.12x = 1,157,303.38 × 430,637.91
  4. Step 4: Simplify right side
    772,208.12x = 498,378,708,799.14
  5. Step 5: Solve for x
    x = 498,378,708,799.14/772,208.12
  6. Step 6: Final answer
    x = 645,394.29

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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.