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Finding the Fourth Proportional to 649,210.90, 973,816.35 and 491,746.90

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Solution

The fourth proportional to 649,210.90, 973,816.35 and 491,746.90 is: 737,620.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,210.90 : 973,816.35 = 491,746.90 : x
  2. Step 2: Convert to fraction form
    649,210.90/973,816.35 = 491,746.90/x
  3. Step 3: Cross multiply
    649,210.90x = 973,816.35 × 491,746.90
  4. Step 4: Simplify right side
    649,210.90x = 478,871,171,281.82
  5. Step 5: Solve for x
    x = 478,871,171,281.82/649,210.90
  6. Step 6: Final answer
    x = 737,620.35

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Half scale
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Double scale
Find fourth proportional to 649,211.90, 973,817.85 and 491,747.90
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.