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Finding the Fourth Proportional to 583,778.52, 805,615.78 and 315,506.52

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Solution

The fourth proportional to 583,778.52, 805,615.78 and 315,506.52 is: 435,399.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,778.52 : 805,615.78 = 315,506.52 : x
  2. Step 2: Convert to fraction form
    583,778.52/805,615.78 = 315,506.52/x
  3. Step 3: Cross multiply
    583,778.52x = 805,615.78 × 315,506.52
  4. Step 4: Simplify right side
    583,778.52x = 254,177,031,204.89
  5. Step 5: Solve for x
    x = 254,177,031,204.89/583,778.52
  6. Step 6: Final answer
    x = 435,399.77

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1.5x scale

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.