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Finding the Fourth Proportional to 877,471.74, 1,316,041.17 and 427,740.30

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Solution

The fourth proportional to 877,471.74, 1,316,041.17 and 427,740.30 is: 641,529.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,471.74 : 1,316,041.17 = 427,740.30 : x
  2. Step 2: Convert to fraction form
    877,471.74/1,316,041.17 = 427,740.30/x
  3. Step 3: Cross multiply
    877,471.74x = 1,316,041.17 × 427,740.30
  4. Step 4: Simplify right side
    877,471.74x = 562,923,844,868.15
  5. Step 5: Solve for x
    x = 562,923,844,868.15/877,471.74
  6. Step 6: Final answer
    x = 641,529.32

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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.