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Finding the Fourth Proportional to 587,792.40, 879,845.40 and 421,904.40

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Solution

The fourth proportional to 587,792.40, 879,845.40 and 421,904.40 is: 631,533.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,792.40 : 879,845.40 = 421,904.40 : x
  2. Step 2: Convert to fraction form
    587,792.40/879,845.40 = 421,904.40/x
  3. Step 3: Cross multiply
    587,792.40x = 879,845.40 × 421,904.40
  4. Step 4: Simplify right side
    587,792.40x = 371,210,645,579.76
  5. Step 5: Solve for x
    x = 371,210,645,579.76/587,792.40
  6. Step 6: Final answer
    x = 631,533.59

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1.5x scale

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.