Home / 912,756.60-1,369,134.90-313,664.40

Finding the Fourth Proportional to 912,756.60, 1,369,134.90 and 313,664.40

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Solution

The fourth proportional to 912,756.60, 1,369,134.90 and 313,664.40 is: 470,496.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,756.60 : 1,369,134.90 = 313,664.40 : x
  2. Step 2: Convert to fraction form
    912,756.60/1,369,134.90 = 313,664.40/x
  3. Step 3: Cross multiply
    912,756.60x = 1,369,134.90 × 313,664.40
  4. Step 4: Simplify right side
    912,756.60x = 429,448,876,927.56
  5. Step 5: Solve for x
    x = 429,448,876,927.56/912,756.60
  6. Step 6: Final answer
    x = 470,496.60

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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.