Home / 651,506.20-977,259.30-429,890.20

Finding the Fourth Proportional to 651,506.20, 977,259.30 and 429,890.20

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Solution

The fourth proportional to 651,506.20, 977,259.30 and 429,890.20 is: 644,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,506.20 : 977,259.30 = 429,890.20 : x
  2. Step 2: Convert to fraction form
    651,506.20/977,259.30 = 429,890.20/x
  3. Step 3: Cross multiply
    651,506.20x = 977,259.30 × 429,890.20
  4. Step 4: Simplify right side
    651,506.20x = 420,114,195,928.86
  5. Step 5: Solve for x
    x = 420,114,195,928.86/651,506.20
  6. Step 6: Final answer
    x = 644,835.30

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Half scale
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Double scale
Find fourth proportional to 651,507.20, 977,260.80 and 429,891.20
Similar ratio
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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.