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Finding the Fourth Proportional to 927,297,600.80, 1,390,946,401.20 and 417,689,664.80

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Solution

The fourth proportional to 927,297,600.80, 1,390,946,401.20 and 417,689,664.80 is: 626,534,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,297,600.80 : 1,390,946,401.20 = 417,689,664.80 : x
  2. Step 2: Convert to fraction form
    927,297,600.80/1,390,946,401.20 = 417,689,664.80/x
  3. Step 3: Cross multiply
    927,297,600.80x = 1,390,946,401.20 × 417,689,664.80
  4. Step 4: Simplify right side
    927,297,600.80x = 580,983,936,071,994,368
  5. Step 5: Solve for x
    x = 580,983,936,071,994,368/927,297,600.80
  6. Step 6: Final answer
    x = 626,534,497.20

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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.