Home / 875,332.80-1,312,999.20-432,043.20

Finding the Fourth Proportional to 875,332.80, 1,312,999.20 and 432,043.20

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Solution

The fourth proportional to 875,332.80, 1,312,999.20 and 432,043.20 is: 648,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,332.80 : 1,312,999.20 = 432,043.20 : x
  2. Step 2: Convert to fraction form
    875,332.80/1,312,999.20 = 432,043.20/x
  3. Step 3: Cross multiply
    875,332.80x = 1,312,999.20 × 432,043.20
  4. Step 4: Simplify right side
    875,332.80x = 567,272,375,965.44
  5. Step 5: Solve for x
    x = 567,272,375,965.44/875,332.80
  6. Step 6: Final answer
    x = 648,064.80

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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.