Home / 874,459.20-1,311,688.80-313,550.40

Finding the Fourth Proportional to 874,459.20, 1,311,688.80 and 313,550.40

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Solution

The fourth proportional to 874,459.20, 1,311,688.80 and 313,550.40 is: 470,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,459.20 : 1,311,688.80 = 313,550.40 : x
  2. Step 2: Convert to fraction form
    874,459.20/1,311,688.80 = 313,550.40/x
  3. Step 3: Cross multiply
    874,459.20x = 1,311,688.80 × 313,550.40
  4. Step 4: Simplify right side
    874,459.20x = 411,280,547,915.52
  5. Step 5: Solve for x
    x = 411,280,547,915.52/874,459.20
  6. Step 6: Final answer
    x = 470,325.60

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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.