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Finding the Fourth Proportional to 620,435.52, 930,362.58 and 260,529.48

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Solution

The fourth proportional to 620,435.52, 930,362.58 and 260,529.48 is: 390,672.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,435.52 : 930,362.58 = 260,529.48 : x
  2. Step 2: Convert to fraction form
    620,435.52/930,362.58 = 260,529.48/x
  3. Step 3: Cross multiply
    620,435.52x = 930,362.58 × 260,529.48
  4. Step 4: Simplify right side
    620,435.52x = 242,386,879,178.86
  5. Step 5: Solve for x
    x = 242,386,879,178.86/620,435.52
  6. Step 6: Final answer
    x = 390,672.15

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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.