Home / 705,346.20-973,487.70-399,438.36

Finding the Fourth Proportional to 705,346.20, 973,487.70 and 399,438.36

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Solution

The fourth proportional to 705,346.20, 973,487.70 and 399,438.36 is: 551,287.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,346.20 : 973,487.70 = 399,438.36 : x
  2. Step 2: Convert to fraction form
    705,346.20/973,487.70 = 399,438.36/x
  3. Step 3: Cross multiply
    705,346.20x = 973,487.70 × 399,438.36
  4. Step 4: Simplify right side
    705,346.20x = 388,848,330,368.17
  5. Step 5: Solve for x
    x = 388,848,330,368.17/705,346.20
  6. Step 6: Final answer
    x = 551,287.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.