Home / 513,219,376.40-769,829,064.60-508,684,413.20

Finding the Fourth Proportional to 513,219,376.40, 769,829,064.60 and 508,684,413.20

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Solution

The fourth proportional to 513,219,376.40, 769,829,064.60 and 508,684,413.20 is: 763,026,619.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,219,376.40 : 769,829,064.60 = 508,684,413.20 : x
  2. Step 2: Convert to fraction form
    513,219,376.40/769,829,064.60 = 508,684,413.20/x
  3. Step 3: Cross multiply
    513,219,376.40x = 769,829,064.60 × 508,684,413.20
  4. Step 4: Simplify right side
    513,219,376.40x = 391,600,045,990,355,904
  5. Step 5: Solve for x
    x = 391,600,045,990,355,904/513,219,376.40
  6. Step 6: Final answer
    x = 763,026,619.80

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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.