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Finding the Fourth Proportional to 709,271.04, 978,920.64 and 422,809.44

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Solution

The fourth proportional to 709,271.04, 978,920.64 and 422,809.44 is: 583,552.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,271.04 : 978,920.64 = 422,809.44 : x
  2. Step 2: Convert to fraction form
    709,271.04/978,920.64 = 422,809.44/x
  3. Step 3: Cross multiply
    709,271.04x = 978,920.64 × 422,809.44
  4. Step 4: Simplify right side
    709,271.04x = 413,896,887,602.84
  5. Step 5: Solve for x
    x = 413,896,887,602.84/709,271.04
  6. Step 6: Final answer
    x = 583,552.50

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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.