Home / 877,768.85-1,211,218.92-490,585.07

Finding the Fourth Proportional to 877,768.85, 1,211,218.92 and 490,585.07

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Solution

The fourth proportional to 877,768.85, 1,211,218.92 and 490,585.07 is: 676,950.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,768.85 : 1,211,218.92 = 490,585.07 : x
  2. Step 2: Convert to fraction form
    877,768.85/1,211,218.92 = 490,585.07/x
  3. Step 3: Cross multiply
    877,768.85x = 1,211,218.92 × 490,585.07
  4. Step 4: Simplify right side
    877,768.85x = 594,205,921,681.57
  5. Step 5: Solve for x
    x = 594,205,921,681.57/877,768.85
  6. Step 6: Final answer
    x = 676,950.34

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Double scale
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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.