Home / 1,220,225.76-1,830,377.16-421,552.80

Finding the Fourth Proportional to 1,220,225.76, 1,830,377.16 and 421,552.80

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Solution

The fourth proportional to 1,220,225.76, 1,830,377.16 and 421,552.80 is: 632,342.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,225.76 : 1,830,377.16 = 421,552.80 : x
  2. Step 2: Convert to fraction form
    1,220,225.76/1,830,377.16 = 421,552.80/x
  3. Step 3: Cross multiply
    1,220,225.76x = 1,830,377.16 × 421,552.80
  4. Step 4: Simplify right side
    1,220,225.76x = 771,600,616,854.05
  5. Step 5: Solve for x
    x = 771,600,616,854.05/1,220,225.76
  6. Step 6: Final answer
    x = 632,342.51

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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.