Home / 789,715.60-1,184,281.80-390,223.60

Finding the Fourth Proportional to 789,715.60, 1,184,281.80 and 390,223.60

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Solution

The fourth proportional to 789,715.60, 1,184,281.80 and 390,223.60 is: 585,191.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,715.60 : 1,184,281.80 = 390,223.60 : x
  2. Step 2: Convert to fraction form
    789,715.60/1,184,281.80 = 390,223.60/x
  3. Step 3: Cross multiply
    789,715.60x = 1,184,281.80 × 390,223.60
  4. Step 4: Simplify right side
    789,715.60x = 462,134,707,410.48
  5. Step 5: Solve for x
    x = 462,134,707,410.48/789,715.60
  6. Step 6: Final answer
    x = 585,191.31

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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.