Home / 739,962.55-1,021,148.28-400,430.80

Finding the Fourth Proportional to 739,962.55, 1,021,148.28 and 400,430.80

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Solution

The fourth proportional to 739,962.55, 1,021,148.28 and 400,430.80 is: 552,594.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,962.55 : 1,021,148.28 = 400,430.80 : x
  2. Step 2: Convert to fraction form
    739,962.55/1,021,148.28 = 400,430.80/x
  3. Step 3: Cross multiply
    739,962.55x = 1,021,148.28 × 400,430.80
  4. Step 4: Simplify right side
    739,962.55x = 408,899,222,679.02
  5. Step 5: Solve for x
    x = 408,899,222,679.02/739,962.55
  6. Step 6: Final answer
    x = 552,594.48

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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.