Home / 513,217,812.40-769,826,718.60-503,014,145.20

Finding the Fourth Proportional to 513,217,812.40, 769,826,718.60 and 503,014,145.20

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Solution

The fourth proportional to 513,217,812.40, 769,826,718.60 and 503,014,145.20 is: 754,521,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,217,812.40 : 769,826,718.60 = 503,014,145.20 : x
  2. Step 2: Convert to fraction form
    513,217,812.40/769,826,718.60 = 503,014,145.20/x
  3. Step 3: Cross multiply
    513,217,812.40x = 769,826,718.60 × 503,014,145.20
  4. Step 4: Simplify right side
    513,217,812.40x = 387,233,728,808,699,968
  5. Step 5: Solve for x
    x = 387,233,728,808,699,968/513,217,812.40
  6. Step 6: Final answer
    x = 754,521,217.80

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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.