Home / 739,980.70-1,109,485.05-290,430.70

Finding the Fourth Proportional to 739,980.70, 1,109,485.05 and 290,430.70

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Solution

The fourth proportional to 739,980.70, 1,109,485.05 and 290,430.70 is: 435,455.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,980.70 : 1,109,485.05 = 290,430.70 : x
  2. Step 2: Convert to fraction form
    739,980.70/1,109,485.05 = 290,430.70/x
  3. Step 3: Cross multiply
    739,980.70x = 1,109,485.05 × 290,430.70
  4. Step 4: Simplify right side
    739,980.70x = 322,228,519,711.04
  5. Step 5: Solve for x
    x = 322,228,519,711.04/739,980.70
  6. Step 6: Final answer
    x = 435,455.30

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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.