Home / 1,008,209-1,391,332.74-555,490.28

Finding the Fourth Proportional to 1,008,209, 1,391,332.74 and 555,490.28

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Solution

The fourth proportional to 1,008,209, 1,391,332.74 and 555,490.28 is: 766,578.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,209 : 1,391,332.74 = 555,490.28 : x
  2. Step 2: Convert to fraction form
    1,008,209/1,391,332.74 = 555,490.28/x
  3. Step 3: Cross multiply
    1,008,209x = 1,391,332.74 × 555,490.28
  4. Step 4: Simplify right side
    1,008,209x = 772,871,813,315.77
  5. Step 5: Solve for x
    x = 772,871,813,315.77/1,008,209
  6. Step 6: Final answer
    x = 766,578.97

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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.