Home / 763,385.60-1,145,515.80-290,410.40

Finding the Fourth Proportional to 763,385.60, 1,145,515.80 and 290,410.40

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Solution

The fourth proportional to 763,385.60, 1,145,515.80 and 290,410.40 is: 435,782.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,385.60 : 1,145,515.80 = 290,410.40 : x
  2. Step 2: Convert to fraction form
    763,385.60/1,145,515.80 = 290,410.40/x
  3. Step 3: Cross multiply
    763,385.60x = 1,145,515.80 × 290,410.40
  4. Step 4: Simplify right side
    763,385.60x = 332,669,701,684.32
  5. Step 5: Solve for x
    x = 332,669,701,684.32/763,385.60
  6. Step 6: Final answer
    x = 435,782.00

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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.