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Finding the Fourth Proportional to 1,315,591, 1,973,698.50 and 429,127

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Solution

The fourth proportional to 1,315,591, 1,973,698.50 and 429,127 is: 643,792.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,591 : 1,973,698.50 = 429,127 : x
  2. Step 2: Convert to fraction form
    1,315,591/1,973,698.50 = 429,127/x
  3. Step 3: Cross multiply
    1,315,591x = 1,973,698.50 × 429,127
  4. Step 4: Simplify right side
    1,315,591x = 846,967,316,209.50
  5. Step 5: Solve for x
    x = 846,967,316,209.50/1,315,591
  6. Step 6: Final answer
    x = 643,792.27

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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.