Home / 426,492,039.20-639,738,058.80-357,617,285.60

Finding the Fourth Proportional to 426,492,039.20, 639,738,058.80 and 357,617,285.60

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Solution

The fourth proportional to 426,492,039.20, 639,738,058.80 and 357,617,285.60 is: 536,425,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,492,039.20 : 639,738,058.80 = 357,617,285.60 : x
  2. Step 2: Convert to fraction form
    426,492,039.20/639,738,058.80 = 357,617,285.60/x
  3. Step 3: Cross multiply
    426,492,039.20x = 639,738,058.80 × 357,617,285.60
  4. Step 4: Simplify right side
    426,492,039.20x = 228,781,388,083,069,184
  5. Step 5: Solve for x
    x = 228,781,388,083,069,184/426,492,039.20
  6. Step 6: Final answer
    x = 536,425,928.40

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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.