Home / 868,085.40-1,301,690.70-513,208.20

Finding the Fourth Proportional to 868,085.40, 1,301,690.70 and 513,208.20

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Solution

The fourth proportional to 868,085.40, 1,301,690.70 and 513,208.20 is: 769,553.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,085.40 : 1,301,690.70 = 513,208.20 : x
  2. Step 2: Convert to fraction form
    868,085.40/1,301,690.70 = 513,208.20/x
  3. Step 3: Cross multiply
    868,085.40x = 1,301,690.70 × 513,208.20
  4. Step 4: Simplify right side
    868,085.40x = 668,038,341,103.74
  5. Step 5: Solve for x
    x = 668,038,341,103.74/868,085.40
  6. Step 6: Final answer
    x = 769,553.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.