Home / 399,425,630.40-599,138,445.60-326,866,219.20

Finding the Fourth Proportional to 399,425,630.40, 599,138,445.60 and 326,866,219.20

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Solution

The fourth proportional to 399,425,630.40, 599,138,445.60 and 326,866,219.20 is: 490,299,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,425,630.40 : 599,138,445.60 = 326,866,219.20 : x
  2. Step 2: Convert to fraction form
    399,425,630.40/599,138,445.60 = 326,866,219.20/x
  3. Step 3: Cross multiply
    399,425,630.40x = 599,138,445.60 × 326,866,219.20
  4. Step 4: Simplify right side
    399,425,630.40x = 195,838,118,490,636,864
  5. Step 5: Solve for x
    x = 195,838,118,490,636,864/399,425,630.40
  6. Step 6: Final answer
    x = 490,299,328.80

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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.