Home / 991,132.34-1,367,718.81-561,403.85

Finding the Fourth Proportional to 991,132.34, 1,367,718.81 and 561,403.85

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Solution

The fourth proportional to 991,132.34, 1,367,718.81 and 561,403.85 is: 774,712.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,132.34 : 1,367,718.81 = 561,403.85 : x
  2. Step 2: Convert to fraction form
    991,132.34/1,367,718.81 = 561,403.85/x
  3. Step 3: Cross multiply
    991,132.34x = 1,367,718.81 × 561,403.85
  4. Step 4: Simplify right side
    991,132.34x = 767,842,598,812.83
  5. Step 5: Solve for x
    x = 767,842,598,812.83/991,132.34
  6. Step 6: Final answer
    x = 774,712.49

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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.