Home / 648,140.70-972,211.05-608,742.30

Finding the Fourth Proportional to 648,140.70, 972,211.05 and 608,742.30

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Solution

The fourth proportional to 648,140.70, 972,211.05 and 608,742.30 is: 913,113.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,140.70 : 972,211.05 = 608,742.30 : x
  2. Step 2: Convert to fraction form
    648,140.70/972,211.05 = 608,742.30/x
  3. Step 3: Cross multiply
    648,140.70x = 972,211.05 × 608,742.30
  4. Step 4: Simplify right side
    648,140.70x = 591,825,990,662.42
  5. Step 5: Solve for x
    x = 591,825,990,662.42/648,140.70
  6. Step 6: Final answer
    x = 913,113.45

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Half scale
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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.