Home / 768,041.20-1,152,061.80-390,127.60

Finding the Fourth Proportional to 768,041.20, 1,152,061.80 and 390,127.60

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Solution

The fourth proportional to 768,041.20, 1,152,061.80 and 390,127.60 is: 585,191.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,041.20 : 1,152,061.80 = 390,127.60 : x
  2. Step 2: Convert to fraction form
    768,041.20/1,152,061.80 = 390,127.60/x
  3. Step 3: Cross multiply
    768,041.20x = 1,152,061.80 × 390,127.60
  4. Step 4: Simplify right side
    768,041.20x = 449,451,105,085.68
  5. Step 5: Solve for x
    x = 449,451,105,085.68/768,041.20
  6. Step 6: Final answer
    x = 585,191.40

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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.