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Finding the Fourth Proportional to 706,991.04, 975,325.32 and 420,348.24

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Solution

The fourth proportional to 706,991.04, 975,325.32 and 420,348.24 is: 579,888.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,991.04 : 975,325.32 = 420,348.24 : x
  2. Step 2: Convert to fraction form
    706,991.04/975,325.32 = 420,348.24/x
  3. Step 3: Cross multiply
    706,991.04x = 975,325.32 × 420,348.24
  4. Step 4: Simplify right side
    706,991.04x = 409,976,281,689.44
  5. Step 5: Solve for x
    x = 409,976,281,689.44/706,991.04
  6. Step 6: Final answer
    x = 579,888.94

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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.