Home / 989,786,574.70-1,365,753,634.05-572,018,180.20

Finding the Fourth Proportional to 989,786,574.70, 1,365,753,634.05 and 572,018,180.20

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Solution

The fourth proportional to 989,786,574.70, 1,365,753,634.05 and 572,018,180.20 is: 789,297,337.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,786,574.70 : 1,365,753,634.05 = 572,018,180.20 : x
  2. Step 2: Convert to fraction form
    989,786,574.70/1,365,753,634.05 = 572,018,180.20/x
  3. Step 3: Cross multiply
    989,786,574.70x = 1,365,753,634.05 × 572,018,180.20
  4. Step 4: Simplify right side
    989,786,574.70x = 781,235,908,350,817,792
  5. Step 5: Solve for x
    x = 781,235,908,350,817,792/989,786,574.70
  6. Step 6: Final answer
    x = 789,297,337.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.