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Finding the Fourth Proportional to 535,621.90, 801,877.65 and 520,069.90

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Solution

The fourth proportional to 535,621.90, 801,877.65 and 520,069.90 is: 778,594.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,621.90 : 801,877.65 = 520,069.90 : x
  2. Step 2: Convert to fraction form
    535,621.90/801,877.65 = 520,069.90/x
  3. Step 3: Cross multiply
    535,621.90x = 801,877.65 × 520,069.90
  4. Step 4: Simplify right side
    535,621.90x = 417,032,429,247.74
  5. Step 5: Solve for x
    x = 417,032,429,247.74/535,621.90
  6. Step 6: Final answer
    x = 778,594.81

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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.