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Finding the Fourth Proportional to 573,406.83, 791,321.73 and 315,303.42

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Solution

The fourth proportional to 573,406.83, 791,321.73 and 315,303.42 is: 435,129.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,406.83 : 791,321.73 = 315,303.42 : x
  2. Step 2: Convert to fraction form
    573,406.83/791,321.73 = 315,303.42/x
  3. Step 3: Cross multiply
    573,406.83x = 791,321.73 × 315,303.42
  4. Step 4: Simplify right side
    573,406.83x = 249,506,447,789.32
  5. Step 5: Solve for x
    x = 249,506,447,789.32/573,406.83
  6. Step 6: Final answer
    x = 435,129.88

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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.