Home / 1,020,131.80-1,528,448.10-486,503.80

Finding the Fourth Proportional to 1,020,131.80, 1,528,448.10 and 486,503.80

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Solution

The fourth proportional to 1,020,131.80, 1,528,448.10 and 486,503.80 is: 728,921.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,131.80 : 1,528,448.10 = 486,503.80 : x
  2. Step 2: Convert to fraction form
    1,020,131.80/1,528,448.10 = 486,503.80/x
  3. Step 3: Cross multiply
    1,020,131.80x = 1,528,448.10 × 486,503.80
  4. Step 4: Simplify right side
    1,020,131.80x = 743,595,808,752.78
  5. Step 5: Solve for x
    x = 743,595,808,752.78/1,020,131.80
  6. Step 6: Final answer
    x = 728,921.31

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Double scale
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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.