Home / 438,631.40-657,947.10-289,040.60

Finding the Fourth Proportional to 438,631.40, 657,947.10 and 289,040.60

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Solution

The fourth proportional to 438,631.40, 657,947.10 and 289,040.60 is: 433,560.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,631.40 : 657,947.10 = 289,040.60 : x
  2. Step 2: Convert to fraction form
    438,631.40/657,947.10 = 289,040.60/x
  3. Step 3: Cross multiply
    438,631.40x = 657,947.10 × 289,040.60
  4. Step 4: Simplify right side
    438,631.40x = 190,173,424,552.26
  5. Step 5: Solve for x
    x = 190,173,424,552.26/438,631.40
  6. Step 6: Final answer
    x = 433,560.90

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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.