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Finding the Fourth Proportional to 719,613, 993,153.42 and 417,807

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Solution

The fourth proportional to 719,613, 993,153.42 and 417,807 is: 576,624.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,613 : 993,153.42 = 417,807 : x
  2. Step 2: Convert to fraction form
    719,613/993,153.42 = 417,807/x
  3. Step 3: Cross multiply
    719,613x = 993,153.42 × 417,807
  4. Step 4: Simplify right side
    719,613x = 414,946,450,949.94
  5. Step 5: Solve for x
    x = 414,946,450,949.94/719,613
  6. Step 6: Final answer
    x = 576,624.45

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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.