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Finding the Fourth Proportional to 622,365.60, 931,474.80 and 572,599.20

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Solution

The fourth proportional to 622,365.60, 931,474.80 and 572,599.20 is: 856,991.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,365.60 : 931,474.80 = 572,599.20 : x
  2. Step 2: Convert to fraction form
    622,365.60/931,474.80 = 572,599.20/x
  3. Step 3: Cross multiply
    622,365.60x = 931,474.80 × 572,599.20
  4. Step 4: Simplify right side
    622,365.60x = 533,361,725,300.16
  5. Step 5: Solve for x
    x = 533,361,725,300.16/622,365.60
  6. Step 6: Final answer
    x = 856,991.01

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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.