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Finding the Fourth Proportional to 565,321,297.74, 780,738,155.64 and 503,696,580.36

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Solution

The fourth proportional to 565,321,297.74, 780,738,155.64 and 503,696,580.36 is: 695,631,211.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,321,297.74 : 780,738,155.64 = 503,696,580.36 : x
  2. Step 2: Convert to fraction form
    565,321,297.74/780,738,155.64 = 503,696,580.36/x
  3. Step 3: Cross multiply
    565,321,297.74x = 780,738,155.64 × 503,696,580.36
  4. Step 4: Simplify right side
    565,321,297.74x = 393,255,139,152,441,472
  5. Step 5: Solve for x
    x = 393,255,139,152,441,472/565,321,297.74
  6. Step 6: Final answer
    x = 695,631,211.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.