Home / 750,722.79-1,035,985.77-428,424.60

Finding the Fourth Proportional to 750,722.79, 1,035,985.77 and 428,424.60

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Solution

The fourth proportional to 750,722.79, 1,035,985.77 and 428,424.60 is: 591,219.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,722.79 : 1,035,985.77 = 428,424.60 : x
  2. Step 2: Convert to fraction form
    750,722.79/1,035,985.77 = 428,424.60/x
  3. Step 3: Cross multiply
    750,722.79x = 1,035,985.77 × 428,424.60
  4. Step 4: Simplify right side
    750,722.79x = 443,841,789,117.94
  5. Step 5: Solve for x
    x = 443,841,789,117.94/750,722.79
  6. Step 6: Final answer
    x = 591,219.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.