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Finding the Fourth Proportional to 690,967.84, 953,774.48 and 404,580

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Solution

The fourth proportional to 690,967.84, 953,774.48 and 404,580 is: 558,460.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,967.84 : 953,774.48 = 404,580 : x
  2. Step 2: Convert to fraction form
    690,967.84/953,774.48 = 404,580/x
  3. Step 3: Cross multiply
    690,967.84x = 953,774.48 × 404,580
  4. Step 4: Simplify right side
    690,967.84x = 385,878,079,118.40
  5. Step 5: Solve for x
    x = 385,878,079,118.40/690,967.84
  6. Step 6: Final answer
    x = 558,460.26

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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.