Home / 643,284.75-887,152.05-401,589.66

Finding the Fourth Proportional to 643,284.75, 887,152.05 and 401,589.66

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Solution

The fourth proportional to 643,284.75, 887,152.05 and 401,589.66 is: 553,831.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,284.75 : 887,152.05 = 401,589.66 : x
  2. Step 2: Convert to fraction form
    643,284.75/887,152.05 = 401,589.66/x
  3. Step 3: Cross multiply
    643,284.75x = 887,152.05 × 401,589.66
  4. Step 4: Simplify right side
    643,284.75x = 356,271,090,127.80
  5. Step 5: Solve for x
    x = 356,271,090,127.80/643,284.75
  6. Step 6: Final answer
    x = 553,831.08

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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.