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Finding the Fourth Proportional to 526,637.80, 789,438.30 and 260,439.40

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Solution

The fourth proportional to 526,637.80, 789,438.30 and 260,439.40 is: 390,402.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,637.80 : 789,438.30 = 260,439.40 : x
  2. Step 2: Convert to fraction form
    526,637.80/789,438.30 = 260,439.40/x
  3. Step 3: Cross multiply
    526,637.80x = 789,438.30 × 260,439.40
  4. Step 4: Simplify right side
    526,637.80x = 205,600,837,189.02
  5. Step 5: Solve for x
    x = 205,600,837,189.02/526,637.80
  6. Step 6: Final answer
    x = 390,402.73

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1.5x scale

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.