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Finding the Fourth Proportional to 670,231.80, 1,005,347.70 and 249,420.60

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Solution

The fourth proportional to 670,231.80, 1,005,347.70 and 249,420.60 is: 374,130.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,231.80 : 1,005,347.70 = 249,420.60 : x
  2. Step 2: Convert to fraction form
    670,231.80/1,005,347.70 = 249,420.60/x
  3. Step 3: Cross multiply
    670,231.80x = 1,005,347.70 × 249,420.60
  4. Step 4: Simplify right side
    670,231.80x = 250,754,426,542.62
  5. Step 5: Solve for x
    x = 250,754,426,542.62/670,231.80
  6. Step 6: Final answer
    x = 374,130.90

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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.