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Finding the Fourth Proportional to 788,457.60, 1,106,640 and 788,457.60

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Solution

The fourth proportional to 788,457.60, 1,106,640 and 788,457.60 is: 1,106,640

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,457.60 : 1,106,640 = 788,457.60 : x
  2. Step 2: Convert to fraction form
    788,457.60/1,106,640 = 788,457.60/x
  3. Step 3: Cross multiply
    788,457.60x = 1,106,640 × 788,457.60
  4. Step 4: Simplify right side
    788,457.60x = 872,538,718,464
  5. Step 5: Solve for x
    x = 872,538,718,464/788,457.60
  6. Step 6: Final answer
    x = 1,106,640

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.