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Finding the Fourth Proportional to 583,312.75, 804,971.60 and 315,040.75

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Solution

The fourth proportional to 583,312.75, 804,971.60 and 315,040.75 is: 434,756.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,312.75 : 804,971.60 = 315,040.75 : x
  2. Step 2: Convert to fraction form
    583,312.75/804,971.60 = 315,040.75/x
  3. Step 3: Cross multiply
    583,312.75x = 804,971.60 × 315,040.75
  4. Step 4: Simplify right side
    583,312.75x = 253,598,856,592.70
  5. Step 5: Solve for x
    x = 253,598,856,592.70/583,312.75
  6. Step 6: Final answer
    x = 434,756.24

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Double scale
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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.