Home / 686,880.40-1,030,320.60-313,632.40

Finding the Fourth Proportional to 686,880.40, 1,030,320.60 and 313,632.40

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Solution

The fourth proportional to 686,880.40, 1,030,320.60 and 313,632.40 is: 470,448.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,880.40 : 1,030,320.60 = 313,632.40 : x
  2. Step 2: Convert to fraction form
    686,880.40/1,030,320.60 = 313,632.40/x
  3. Step 3: Cross multiply
    686,880.40x = 1,030,320.60 × 313,632.40
  4. Step 4: Simplify right side
    686,880.40x = 323,141,922,547.44
  5. Step 5: Solve for x
    x = 323,141,922,547.44/686,880.40
  6. Step 6: Final answer
    x = 470,448.60

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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.