Home / 991,018.08-1,367,598.80-538,305.12

Finding the Fourth Proportional to 991,018.08, 1,367,598.80 and 538,305.12

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Solution

The fourth proportional to 991,018.08, 1,367,598.80 and 538,305.12 is: 742,857.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,018.08 : 1,367,598.80 = 538,305.12 : x
  2. Step 2: Convert to fraction form
    991,018.08/1,367,598.80 = 538,305.12/x
  3. Step 3: Cross multiply
    991,018.08x = 1,367,598.80 × 538,305.12
  4. Step 4: Simplify right side
    991,018.08x = 736,185,436,145.86
  5. Step 5: Solve for x
    x = 736,185,436,145.86/991,018.08
  6. Step 6: Final answer
    x = 742,857.72

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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.