Home / 1,020,220.80-1,530,914.40-389,587.20

Finding the Fourth Proportional to 1,020,220.80, 1,530,914.40 and 389,587.20

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Solution

The fourth proportional to 1,020,220.80, 1,530,914.40 and 389,587.20 is: 584,603.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,220.80 : 1,530,914.40 = 389,587.20 : x
  2. Step 2: Convert to fraction form
    1,020,220.80/1,530,914.40 = 389,587.20/x
  3. Step 3: Cross multiply
    1,020,220.80x = 1,530,914.40 × 389,587.20
  4. Step 4: Simplify right side
    1,020,220.80x = 596,424,654,535.68
  5. Step 5: Solve for x
    x = 596,424,654,535.68/1,020,220.80
  6. Step 6: Final answer
    x = 584,603.50

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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.