Home / 769,143.80-1,152,938.10-348,721.40

Finding the Fourth Proportional to 769,143.80, 1,152,938.10 and 348,721.40

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Solution

The fourth proportional to 769,143.80, 1,152,938.10 and 348,721.40 is: 522,729.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,143.80 : 1,152,938.10 = 348,721.40 : x
  2. Step 2: Convert to fraction form
    769,143.80/1,152,938.10 = 348,721.40/x
  3. Step 3: Cross multiply
    769,143.80x = 1,152,938.10 × 348,721.40
  4. Step 4: Simplify right side
    769,143.80x = 402,054,188,345.34
  5. Step 5: Solve for x
    x = 402,054,188,345.34/769,143.80
  6. Step 6: Final answer
    x = 522,729.54

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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.