Home / 929,642.16-1,282,782.78-521,728.32

Finding the Fourth Proportional to 929,642.16, 1,282,782.78 and 521,728.32

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Solution

The fourth proportional to 929,642.16, 1,282,782.78 and 521,728.32 is: 719,915.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,642.16 : 1,282,782.78 = 521,728.32 : x
  2. Step 2: Convert to fraction form
    929,642.16/1,282,782.78 = 521,728.32/x
  3. Step 3: Cross multiply
    929,642.16x = 1,282,782.78 × 521,728.32
  4. Step 4: Simplify right side
    929,642.16x = 669,264,104,734.33
  5. Step 5: Solve for x
    x = 669,264,104,734.33/929,642.16
  6. Step 6: Final answer
    x = 719,915.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.