Home / 787,117.40-1,180,676.10-313,875.80

Finding the Fourth Proportional to 787,117.40, 1,180,676.10 and 313,875.80

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Solution

The fourth proportional to 787,117.40, 1,180,676.10 and 313,875.80 is: 470,813.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,117.40 : 1,180,676.10 = 313,875.80 : x
  2. Step 2: Convert to fraction form
    787,117.40/1,180,676.10 = 313,875.80/x
  3. Step 3: Cross multiply
    787,117.40x = 1,180,676.10 × 313,875.80
  4. Step 4: Simplify right side
    787,117.40x = 370,585,655,428.38
  5. Step 5: Solve for x
    x = 370,585,655,428.38/787,117.40
  6. Step 6: Final answer
    x = 470,813.70

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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.