Home / 991,134.90-1,367,698.77-538,416.18

Finding the Fourth Proportional to 991,134.90, 1,367,698.77 and 538,416.18

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Solution

The fourth proportional to 991,134.90, 1,367,698.77 and 538,416.18 is: 742,977.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,134.90 : 1,367,698.77 = 538,416.18 : x
  2. Step 2: Convert to fraction form
    991,134.90/1,367,698.77 = 538,416.18/x
  3. Step 3: Cross multiply
    991,134.90x = 1,367,698.77 × 538,416.18
  4. Step 4: Simplify right side
    991,134.90x = 736,391,147,134.10
  5. Step 5: Solve for x
    x = 736,391,147,134.10/991,134.90
  6. Step 6: Final answer
    x = 742,977.72

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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.