Home / 789,688,328.82-1,090,905,041.10-630,709,724.58

Finding the Fourth Proportional to 789,688,328.82, 1,090,905,041.10 and 630,709,724.58

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Solution

The fourth proportional to 789,688,328.82, 1,090,905,041.10 and 630,709,724.58 is: 871,286,041.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,688,328.82 : 1,090,905,041.10 = 630,709,724.58 : x
  2. Step 2: Convert to fraction form
    789,688,328.82/1,090,905,041.10 = 630,709,724.58/x
  3. Step 3: Cross multiply
    789,688,328.82x = 1,090,905,041.10 × 630,709,724.58
  4. Step 4: Simplify right side
    789,688,328.82x = 688,044,418,015,114,624
  5. Step 5: Solve for x
    x = 688,044,418,015,114,624/789,688,328.82
  6. Step 6: Final answer
    x = 871,286,041.47

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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.