Home / 714,199.55-985,594.77-391,929.89

Finding the Fourth Proportional to 714,199.55, 985,594.77 and 391,929.89

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Solution

The fourth proportional to 714,199.55, 985,594.77 and 391,929.89 is: 540,862.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,199.55 : 985,594.77 = 391,929.89 : x
  2. Step 2: Convert to fraction form
    714,199.55/985,594.77 = 391,929.89/x
  3. Step 3: Cross multiply
    714,199.55x = 985,594.77 × 391,929.89
  4. Step 4: Simplify right side
    714,199.55x = 386,284,044,862.70
  5. Step 5: Solve for x
    x = 386,284,044,862.70/714,199.55
  6. Step 6: Final answer
    x = 540,862.91

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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.