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Finding the Fourth Proportional to 526,335.30, 788,336.55 and 407,621.70

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Solution

The fourth proportional to 526,335.30, 788,336.55 and 407,621.70 is: 610,529.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,335.30 : 788,336.55 = 407,621.70 : x
  2. Step 2: Convert to fraction form
    526,335.30/788,336.55 = 407,621.70/x
  3. Step 3: Cross multiply
    526,335.30x = 788,336.55 × 407,621.70
  4. Step 4: Simplify right side
    526,335.30x = 321,343,084,683.14
  5. Step 5: Solve for x
    x = 321,343,084,683.14/526,335.30
  6. Step 6: Final answer
    x = 610,529.23

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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.