Home / 977,160.80-1,465,741.20-312,312.80

Finding the Fourth Proportional to 977,160.80, 1,465,741.20 and 312,312.80

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Solution

The fourth proportional to 977,160.80, 1,465,741.20 and 312,312.80 is: 468,469.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,160.80 : 1,465,741.20 = 312,312.80 : x
  2. Step 2: Convert to fraction form
    977,160.80/1,465,741.20 = 312,312.80/x
  3. Step 3: Cross multiply
    977,160.80x = 1,465,741.20 × 312,312.80
  4. Step 4: Simplify right side
    977,160.80x = 457,769,738,247.36
  5. Step 5: Solve for x
    x = 457,769,738,247.36/977,160.80
  6. Step 6: Final answer
    x = 468,469.20

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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.