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Finding the Fourth Proportional to 670,501.80, 1,005,752.70 and 249,690.60

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Solution

The fourth proportional to 670,501.80, 1,005,752.70 and 249,690.60 is: 374,535.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,501.80 : 1,005,752.70 = 249,690.60 : x
  2. Step 2: Convert to fraction form
    670,501.80/1,005,752.70 = 249,690.60/x
  3. Step 3: Cross multiply
    670,501.80x = 1,005,752.70 × 249,690.60
  4. Step 4: Simplify right side
    670,501.80x = 251,126,995,114.62
  5. Step 5: Solve for x
    x = 251,126,995,114.62/670,501.80
  6. Step 6: Final answer
    x = 374,535.90

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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.