Home / 912,821.60-1,369,232.40-313,729.40

Finding the Fourth Proportional to 912,821.60, 1,369,232.40 and 313,729.40

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Solution

The fourth proportional to 912,821.60, 1,369,232.40 and 313,729.40 is: 470,594.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,821.60 : 1,369,232.40 = 313,729.40 : x
  2. Step 2: Convert to fraction form
    912,821.60/1,369,232.40 = 313,729.40/x
  3. Step 3: Cross multiply
    912,821.60x = 1,369,232.40 × 313,729.40
  4. Step 4: Simplify right side
    912,821.60x = 429,568,459,312.56
  5. Step 5: Solve for x
    x = 429,568,459,312.56/912,821.60
  6. Step 6: Final answer
    x = 470,594.10

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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.