Home / 739,643.40-1,109,501.55-385,349.40

Finding the Fourth Proportional to 739,643.40, 1,109,501.55 and 385,349.40

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Solution

The fourth proportional to 739,643.40, 1,109,501.55 and 385,349.40 is: 578,043.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,643.40 : 1,109,501.55 = 385,349.40 : x
  2. Step 2: Convert to fraction form
    739,643.40/1,109,501.55 = 385,349.40/x
  3. Step 3: Cross multiply
    739,643.40x = 1,109,501.55 × 385,349.40
  4. Step 4: Simplify right side
    739,643.40x = 427,545,756,591.57
  5. Step 5: Solve for x
    x = 427,545,756,591.57/739,643.40
  6. Step 6: Final answer
    x = 578,043.09

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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.