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Finding the Fourth Proportional to 538,603.40, 807,905.10 and 370,641.80

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Solution

The fourth proportional to 538,603.40, 807,905.10 and 370,641.80 is: 555,962.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,603.40 : 807,905.10 = 370,641.80 : x
  2. Step 2: Convert to fraction form
    538,603.40/807,905.10 = 370,641.80/x
  3. Step 3: Cross multiply
    538,603.40x = 807,905.10 × 370,641.80
  4. Step 4: Simplify right side
    538,603.40x = 299,443,400,493.18
  5. Step 5: Solve for x
    x = 299,443,400,493.18/538,603.40
  6. Step 6: Final answer
    x = 555,962.70

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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.