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Finding the Fourth Proportional to 660,692.20, 991,038.30 and 550,467.40

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Solution

The fourth proportional to 660,692.20, 991,038.30 and 550,467.40 is: 825,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,692.20 : 991,038.30 = 550,467.40 : x
  2. Step 2: Convert to fraction form
    660,692.20/991,038.30 = 550,467.40/x
  3. Step 3: Cross multiply
    660,692.20x = 991,038.30 × 550,467.40
  4. Step 4: Simplify right side
    660,692.20x = 545,534,276,301.42
  5. Step 5: Solve for x
    x = 545,534,276,301.42/660,692.20
  6. Step 6: Final answer
    x = 825,701.10

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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.