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Finding the Fourth Proportional to 719,506.60, 992,903.32 and 392,808.44

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Solution

The fourth proportional to 719,506.60, 992,903.32 and 392,808.44 is: 542,067.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,506.60 : 992,903.32 = 392,808.44 : x
  2. Step 2: Convert to fraction form
    719,506.60/992,903.32 = 392,808.44/x
  3. Step 3: Cross multiply
    719,506.60x = 992,903.32 × 392,808.44
  4. Step 4: Simplify right side
    719,506.60x = 390,020,804,200.02
  5. Step 5: Solve for x
    x = 390,020,804,200.02/719,506.60
  6. Step 6: Final answer
    x = 542,067.03

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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.