Home / 651,931.20-977,896.80-630,158.40

Finding the Fourth Proportional to 651,931.20, 977,896.80 and 630,158.40

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Solution

The fourth proportional to 651,931.20, 977,896.80 and 630,158.40 is: 945,237.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,931.20 : 977,896.80 = 630,158.40 : x
  2. Step 2: Convert to fraction form
    651,931.20/977,896.80 = 630,158.40/x
  3. Step 3: Cross multiply
    651,931.20x = 977,896.80 × 630,158.40
  4. Step 4: Simplify right side
    651,931.20x = 616,229,882,853.12
  5. Step 5: Solve for x
    x = 616,229,882,853.12/651,931.20
  6. Step 6: Final answer
    x = 945,237.60

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Half scale
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Double scale
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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.