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Finding the Fourth Proportional to 662,509.60, 993,764.40 and 513,210.40

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Solution

The fourth proportional to 662,509.60, 993,764.40 and 513,210.40 is: 769,815.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,509.60 : 993,764.40 = 513,210.40 : x
  2. Step 2: Convert to fraction form
    662,509.60/993,764.40 = 513,210.40/x
  3. Step 3: Cross multiply
    662,509.60x = 993,764.40 × 513,210.40
  4. Step 4: Simplify right side
    662,509.60x = 510,010,225,229.76
  5. Step 5: Solve for x
    x = 510,010,225,229.76/662,509.60
  6. Step 6: Final answer
    x = 769,815.60

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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.