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Finding the Fourth Proportional to 583,399, 805,090.94 and 315,127

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Solution

The fourth proportional to 583,399, 805,090.94 and 315,127 is: 434,875.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,399 : 805,090.94 = 315,127 : x
  2. Step 2: Convert to fraction form
    583,399/805,090.94 = 315,127/x
  3. Step 3: Cross multiply
    583,399x = 805,090.94 × 315,127
  4. Step 4: Simplify right side
    583,399x = 253,705,892,649.38
  5. Step 5: Solve for x
    x = 253,705,892,649.38/583,399
  6. Step 6: Final answer
    x = 434,875.43

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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.