Home / 651,719.40-977,579.10-315,018.60

Finding the Fourth Proportional to 651,719.40, 977,579.10 and 315,018.60

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Solution

The fourth proportional to 651,719.40, 977,579.10 and 315,018.60 is: 472,527.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,719.40 : 977,579.10 = 315,018.60 : x
  2. Step 2: Convert to fraction form
    651,719.40/977,579.10 = 315,018.60/x
  3. Step 3: Cross multiply
    651,719.40x = 977,579.10 × 315,018.60
  4. Step 4: Simplify right side
    651,719.40x = 307,955,599,471.26
  5. Step 5: Solve for x
    x = 307,955,599,471.26/651,719.40
  6. Step 6: Final answer
    x = 472,527.90

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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.