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Finding the Fourth Proportional to 583,799.78, 805,643.34 and 315,527.78

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Solution

The fourth proportional to 583,799.78, 805,643.34 and 315,527.78 is: 435,428.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,799.78 : 805,643.34 = 315,527.78 : x
  2. Step 2: Convert to fraction form
    583,799.78/805,643.34 = 315,527.78/x
  3. Step 3: Cross multiply
    583,799.78x = 805,643.34 × 315,527.78
  4. Step 4: Simplify right side
    583,799.78x = 254,202,854,541.99
  5. Step 5: Solve for x
    x = 254,202,854,541.99/583,799.78
  6. Step 6: Final answer
    x = 435,428.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.