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Finding the Fourth Proportional to 487,637.70, 731,456.55 and 403,656.90

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Solution

The fourth proportional to 487,637.70, 731,456.55 and 403,656.90 is: 605,485.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,637.70 : 731,456.55 = 403,656.90 : x
  2. Step 2: Convert to fraction form
    487,637.70/731,456.55 = 403,656.90/x
  3. Step 3: Cross multiply
    487,637.70x = 731,456.55 × 403,656.90
  4. Step 4: Simplify right side
    487,637.70x = 295,257,483,457.70
  5. Step 5: Solve for x
    x = 295,257,483,457.70/487,637.70
  6. Step 6: Final answer
    x = 605,485.35

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.