Home / 460,802.20-691,319.96-128,378.20

Finding the Fourth Proportional to 460,802.20, 691,319.96 and 128,378.20

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Solution

The fourth proportional to 460,802.20, 691,319.96 and 128,378.20 is: 192,599.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,802.20 : 691,319.96 = 128,378.20 : x
  2. Step 2: Convert to fraction form
    460,802.20/691,319.96 = 128,378.20/x
  3. Step 3: Cross multiply
    460,802.20x = 691,319.96 × 128,378.20
  4. Step 4: Simplify right side
    460,802.20x = 88,750,412,088.87
  5. Step 5: Solve for x
    x = 88,750,412,088.87/460,802.20
  6. Step 6: Final answer
    x = 192,599.80

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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.