Home / 427,743,417.60-642,985,063.20-397,415,851.20

Finding the Fourth Proportional to 427,743,417.60, 642,985,063.20 and 397,415,851.20

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Solution

The fourth proportional to 427,743,417.60, 642,985,063.20 and 397,415,851.20 is: 597,396,583.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,743,417.60 : 642,985,063.20 = 397,415,851.20 : x
  2. Step 2: Convert to fraction form
    427,743,417.60/642,985,063.20 = 397,415,851.20/x
  3. Step 3: Cross multiply
    427,743,417.60x = 642,985,063.20 × 397,415,851.20
  4. Step 4: Simplify right side
    427,743,417.60x = 255,532,456,200,513,792
  5. Step 5: Solve for x
    x = 255,532,456,200,513,792/427,743,417.60
  6. Step 6: Final answer
    x = 597,396,583.29

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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.