Home / 931,256.88-1,285,143.48-528,851.76

Finding the Fourth Proportional to 931,256.88, 1,285,143.48 and 528,851.76

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Solution

The fourth proportional to 931,256.88, 1,285,143.48 and 528,851.76 is: 729,820.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,256.88 : 1,285,143.48 = 528,851.76 : x
  2. Step 2: Convert to fraction form
    931,256.88/1,285,143.48 = 528,851.76/x
  3. Step 3: Cross multiply
    931,256.88x = 1,285,143.48 × 528,851.76
  4. Step 4: Simplify right side
    931,256.88x = 679,650,391,250.53
  5. Step 5: Solve for x
    x = 679,650,391,250.53/931,256.88
  6. Step 6: Final answer
    x = 729,820.53

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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.