Home / 620,899.89-856,849.57-375,881.40

Finding the Fourth Proportional to 620,899.89, 856,849.57 and 375,881.40

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Solution

The fourth proportional to 620,899.89, 856,849.57 and 375,881.40 is: 518,721.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,899.89 : 856,849.57 = 375,881.40 : x
  2. Step 2: Convert to fraction form
    620,899.89/856,849.57 = 375,881.40/x
  3. Step 3: Cross multiply
    620,899.89x = 856,849.57 × 375,881.40
  4. Step 4: Simplify right side
    620,899.89x = 322,073,811,676.75
  5. Step 5: Solve for x
    x = 322,073,811,676.75/620,899.89
  6. Step 6: Final answer
    x = 518,721.00

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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.