Home / 738,427.80-1,107,584.10-289,061.40

Finding the Fourth Proportional to 738,427.80, 1,107,584.10 and 289,061.40

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Solution

The fourth proportional to 738,427.80, 1,107,584.10 and 289,061.40 is: 433,569.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,427.80 : 1,107,584.10 = 289,061.40 : x
  2. Step 2: Convert to fraction form
    738,427.80/1,107,584.10 = 289,061.40/x
  3. Step 3: Cross multiply
    738,427.80x = 1,107,584.10 × 289,061.40
  4. Step 4: Simplify right side
    738,427.80x = 320,159,810,563.74
  5. Step 5: Solve for x
    x = 320,159,810,563.74/738,427.80
  6. Step 6: Final answer
    x = 433,569.55

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Double scale
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Similar ratio
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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.