Home / 572,895.21-790,617.83-391,986.57

Finding the Fourth Proportional to 572,895.21, 790,617.83 and 391,986.57

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Solution

The fourth proportional to 572,895.21, 790,617.83 and 391,986.57 is: 540,956.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,895.21 : 790,617.83 = 391,986.57 : x
  2. Step 2: Convert to fraction form
    572,895.21/790,617.83 = 391,986.57/x
  3. Step 3: Cross multiply
    572,895.21x = 790,617.83 × 391,986.57
  4. Step 4: Simplify right side
    572,895.21x = 309,911,569,402.61
  5. Step 5: Solve for x
    x = 309,911,569,402.61/572,895.21
  6. Step 6: Final answer
    x = 540,956.82

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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.