Home / 877,840.20-1,315,971.90-345,724.20

Finding the Fourth Proportional to 877,840.20, 1,315,971.90 and 345,724.20

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Solution

The fourth proportional to 877,840.20, 1,315,971.90 and 345,724.20 is: 518,275.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,840.20 : 1,315,971.90 = 345,724.20 : x
  2. Step 2: Convert to fraction form
    877,840.20/1,315,971.90 = 345,724.20/x
  3. Step 3: Cross multiply
    877,840.20x = 1,315,971.90 × 345,724.20
  4. Step 4: Simplify right side
    877,840.20x = 454,963,332,349.98
  5. Step 5: Solve for x
    x = 454,963,332,349.98/877,840.20
  6. Step 6: Final answer
    x = 518,275.80

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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.